My Baby Brother is the Strongest Character MASTERLIST
Featuring:
isekaid!older sister!Reader and younger brother!Gun Park
reverse harem: core five
Goo Kim, James Lee/DG, Samuel Seo, Gitae Kim, Jake Kim
reverse harem: other love interests
Jinrang (Lang Jin), Seongji Yuk, Jichang Kwak
Synopsis:
If God is real, then He has one hell of a sense of humor.
Life hasn’t been perfect. There were ups and downs, times where you wished you were born as someone else, someone prettier or richer or more talented, but you had reached a point where you were content. Happy, even. A promotion abroad, a new apartment with no roommates, delicious paychecks and what does the Big Guy do? He kills you. What’s more pathetic is that you died choking on chicken skin while celebrating your new life of independence.
Just when you were an official, proper, working adult of society, the universe spat in your face and now you were back to square one.
No, scratch that, you didn’t regress—you reincarnated as the only known daughter of a yakuza boss. Sounds fancy, you know, but this is no romance manga. Actually, it’s somehow worse, because your baby brother is the infamous Gun Park.
Your Character Settings: AFAB, older half-sister of Gun Park, civilian, medical professional
Content/Trigger Warnings: swearing, typical Lookism violence, sexual themes, mind the warnings for individual chapters
Other Tags: slice of life, isekai, reincarnation/rebirth, sister complex, reverse harem/why choose, fluff, comedy, humor
💋 : smut (from mild to explicit)
Author's Note: There is no deep plot to this. This is just fluffy family stuff with Gun Park being protective of you, his older sister and a magnet for hot weirdos. NO BROTHER-SISTER INCEST. Also, some ages have been lifted.
IMPORTANT: I started this AU during the early chapters of the Incheon arc. Don't think. Just enjoy the ride.
Episodes:
First Meeting
You've been reincarnated and now you have a weirdo younger brother.
Games
Gun has a special place in his heart for toys and puzzles.
Birthday
Goo shows up unannounced after Gun missed a work meeting.
Angel of J High (featuring: the J High first years)
You've grown accustomed to your life as the school nurse for J High.
It's a Promise (featuring: James Lee/DG)
A forgotten promise comes back to haunt you.
Swift Waters Parted
It's the day of the festival, but why do you feel like you're forgetting something?
Morning Sun (featuring: Samuel Seo) 💋
You meet up with a friend for drinks.
Safe and Sound
You and Gun finally share a meal again.
Weirdo (featuring: Goo Kim)
Gun Park has been acting weird and Goo will get to the bottom of it!
Like Water for Chocolate (featuring: Gitae Kim)💋
Once upon a time in Mexico...
Paper Snow, Glittering Fish
Gun reminisces about his two very different experiences with Mother's Day.
Scammers and Strange Fellows (featuring: Goo Kim)
You have a word with the man who tries to scam your students.
Like Tears in the Rain (featuring: Jake Kim)
A near chicken skin fatality leads to a fateful encounter.
Kryptonite (featuring: James Lee/DG)
You struggle to find a gift for your brother so you rope in a "former" admirer for help.
Bert and Ernie (featuring: Goo Kim)
The tension in Goo and Gun's friendship reaches its boiling point.
Morning After (featuring: Samuel Seo, Goo Kim)
Samuel doesn't do breakfast buffets, but then the elevator greets him with an unexpected surprise.
Trip to Busan (featuring: Goo Kim, Busan Gang and Lang Jin/Jinrang)
Gun accompanies you to Busan for a medical mission, and where Archie goes Jughead follows.
Noah's Ark (Gun-focused but with minor Goo Kim x Reader)
One fishing trip changes the course of history.
Anchor
The bad days come and go like the tide, but luckily, you found your anchor.
Fish Out of Water (featuring: Seongji Yuk and his students, Samuel Seo)
Seongji Yuk and his students visit Seoul for the first time.
Fire! (featuring: Samuel Seo)
Your house catches fire, forcing you to relocate.
Alibi in Ashes (featuring: Samuel Seo, James Lee/DG, Goo Kim)
(Direct continuation of "Fire!")
Life goes on after your house is set ablaze, but the culprit maybe closer than you think.
Out of the Frying Pan (featuring: Samuel Seo, James Lee/DG, Goo Kim)
(Direct continuation of "Alibi in Ashes")
You confront the so-called arsonist.
Stupid Piece Of (featuring: Samuel Seo)
A glimpse into Samuel Seo's devotion.
If I Love You, Beware (featuring: Gitae Kim, James Lee/DG) 💋
Gitae Kim's hunger remains unsatiated and he doesn't understand why.
So This Is Love (featuring: Gun Park, Jake Kim, James Lee/DG, Gitae Kim) 💋
You encounter an old acquaintance while doing a favor for your senior.
Lovefool (featuring: Gitae Kim, James Lee/DG) 💋
(Direct continuation of "So This Is Love")
You finally get a whole day to yourself. No boys, no drama. Or so you thought.
Haunted (featuring: Gitae Kim, James Lee/DG) 💋
(Direct continuation of "Lovefool")
What's worse than one persistent freak?
Second Puberty (featuring: James Lee/DG, Gitae Kim, Gun Park, Goo Kim)
(Direct continuation of "Haunted")
DG forces you to stop looking away, Gitae Kim is a surprisingly decent conversation partner and Goo Kim realizes something.
Tempting Fate (feauturing: Jake Kim, Samuel Seo)
Jake Kim invites you for a drink.
Better Than Candy (featuring: James Lee/DG) 💋
You're right, he can't keep sucking on lollipops forever.
The One That Got Away (featuring: Jichang Kwak) 💋
The girls ask you for relationship advice.
Bonus Content:
Timeline explanation
smut scenarios with the men of the harem (James Lee/Diego Kang, Samuel Seo, Jake Kim, Gitae Kim, Goo Kim) 💋
content/trigger warnings: NSFW, MDNI, dubcon, male masturbation, use of improvised sex toys, violence (not inflicted on Reader) in Gitae's section
NSFW Alphabet: Gitae Kim💋
“Uh, I like noses. I like big noses because well, because you can kind of like, you can like sit on them.” – Doja Cat, 2021
These headcanons are specific to MBBITSC! Gitae Kim and references his first time with AFAB!Reader, which occurs in the episode "Like Water For Chocolate."
NSFW Alphabet: James Lee/DG💋
These headcanons are specific to MBBITSC! James Lee/DG.
NSFW Alphabet: Samuel Seo 💋
These headcanons are specific to MBBITSC! Samuel Seo, who is way softer than canon!Samuel.
Love Languages with Younger Brother! Gun Park
A fluff-filled exploration on how Gun Park communicates his affection for you, his older sister.
What if...
MBBITSC! Gun Park switched consciousness with canon!Gun
You're reborn into the Pre-Generation (masterlist)
You ended up in Korea at age 8. (ask/discussion)
You had a son with Gitae Kim (masterlist)
Twins
You were in a sorta love triangle with Gap Kim and Minseon Kang
Fan art (^///^):
Single mom!Reader and Baby 1
Single mom!Reader and Baby 2
Single mom!Reader and Baby 3
Disclaimer: The image used does not belong to me. It is a screencapture from Ep. 505 - Lookism, Webtoon.
CONTENT WARNING: This post contains mild suggestive themes.
JAMES LEE
James notices it within exactly two seconds of you walking into the living room.
He says nothing. But you've managed to distract him.
His eyes trace the soft outline beneath your oversized tee.
He will play it incredibly cool.
He’ll sit back on the couch, crossing his legs, but his eyes will track your every movement as you stretch over the coffee table to grab the remote.
When you sit next to him, he casually drapes his arm over the back of the sofa, but his fingers gently hook into the collar of your tee, pulling you against him.
"You seem comfortable."
"Is that a problem?"
"Quite the opposite."
GUN PARK
The moment you walk past him in a thin, bra-less tank top, his eyes instantly fixate on the subtle bounce and the distinct outline of your nipples pressing against the fabric.
He stares right at them.
"You do know that they exist for support, right?"
"But they're a pain in the... chest?"
Gun smirks.
But as soon as the bell rings or you need to step out, he will literally take whatever oversized hoodie or jacket he’s currently wearing, toss it over your head like a blanket, and tell you to put it on.
If you complain that it’s uncomfortable, he’ll just glare.
"Only I get to see you like this, understood?".
GOO KIM
Goo is sitting on the floor playing a video game when you walk by to grab a snack.
He accidentally catches a glimpse of the unmistakable shape beneath your shirt, completely misses a combo, and the screen loudly blares GAME OVER.
He drops the controller, his jaw hitting the floor as his glasses slide right down the bridge of his nose.
"Are we... are we just letting the girls breathe today? What's the occasion?!"
"Shut tf up, Goo. I'm just feeling hot."
"..."
"Stop staring weirdo."
"Baby I'm trying, really! But they're staring back at me."
JOHAN SEONG
He’s sitting on your bed, trying to fix a strap on his bag, when you sit down right across from him in a loose, baggy pajama top.
As soon as he catches sight of it, his face goes full on medical emergency mode.
He violently snaps his head to the side and stared aggressively at the wall.
"Everything alright Johan?"
"JOHAN! ARE YOU OKAY-"
Buddy's literally having a nosebleed.
"Johan, calm down! It's just my pajamas; besides we're at home."
After you clean him up, he gets extremely touchy.
Wrapping his arms around your waist while you cook. Or constantly touching you while you guys sit on the couch watching movies.
SAMUEL SEO
He’s pouring himself a glass of water when you walk into the kitchen.
His eyes immediately lock onto your chest,
He sets the glass down with a heavy thud. He moves towards you.
"Are you doing this on purpose?"
"Why is something wrong?"
His eyes drop to your chest.
"Ohhhh. I don't think this should be a problem. You walk around like this all the time-"
He doesn't let you complete the sentence.
He hooks his fingers under the hem of your shirt, lifting it just enough to see your boobs.
"Smart choice. Saves me the trouble of taking it off later."
DANIEL PARK (OG)
Poor, sweet Daniel.
You two are sitting on the floor studying when you stretch your arms over your head, lifting your shirt just enough to show that you're completely free underneath.
Daniel looks up, sees the distinct movement, and his eyes go wiiiiide.
He lets out a high-pitched squeak, as his hands fly up to cover his face.
"Y/N! Oh my gosh, I'm so sorry! I didn't mean to look, I swear!"
He’s currently sweating through his clothes because he doesn't know where to look.
Even after you laugh and tell him it’s fine, he keeps his eyes glued strictly to his textbook, his fingers trembling as he turns the pages.
He keeps stealing tiny glances when he thinks you aren't looking, his heart beating so loud you can practically hear it.
JAKE KIM
Jake’s lying on the bed when you walk in, and the second he notices your bra-less look
A slow, incredibly fond grin spreads across his face.
He opens his arms wide, patting the empty spot on his chest.
"Come here the love of my life."
The moment you slide into his embrace, he wraps his large arms securely around your back, his hands sliding under your shirt to press directly against your bare skin.
He lets out a contented sigh, burying his face in your hair.
"I love it when you're this relaxed around me. Makes me feel like you're officially all mine."
So your man did something wrong, and now it’s time to punish him. How would you do it, and how would it play out?
GUN PARK
He’ll listen to you without interrupting at all, but he will get annoyed. If you hit him with a broom or threaten to get physical, though, to him that’s basically just you asking for sex. He’ll be glad you’re being so fiery. The whole not tolerating nonsense conversation evaporates into thin air the second you start acting aggressive toward him.
GOO KIM
He’ll act like an injured puppy. Why are you lecturing him for getting stabbed in the stomach? Why aren’t you showering his face with kisses instead? He won’t listen to a single word you say, but he’ll still act as if your word is his final command.
JAMES LEE
Back in high school, he’d patiently listen to you, only to kiss you the second you were done threatening and shouting at him. Now, though, you’re both in a much calmer place. Still, he absolutely loves when you fuss over him or lecture him to be careful. He’ll probably say something unbearably corny, and suddenly you’re right back in those old days again. Brat hasn’t changed a single bit.
CHANGSU OH
He forgot to pay Chunhee’s school fees on time and wouldn’t even let you pay because he insisted he had it handled. So yes, lecture time. He’ll absolutely hear an earful, and honestly, he’s a little scared of you. Because why are you waving a knife around while talking about household responsibilities? This is the same man who taught you how to throw one properly in the first place.
JAEGYEON NA
This one is a whole puppy. You can practically see him wagging his tail in sadness. He’ll feel genuinely remorseful and deeply guilty for not living up to expectations. Honestly, don’t even do this to him. He takes your disappointment way too seriously.
SEONGJI YUK
He’ll huff and puff through your entire lecture, arms crossed with a pout on his face while his tiddies threatens to burst out of his vest. Meanwhile, your attention slowly shifts from being angry to staring at how cute he looks while sulking and his tiddies. Just like he offered James tanghulu to convince him to go back to his parents, he’ll try the same tactic with you telling you he prepared a bunch of delicious food. Somehow, food always helps him escape your wrath.
JOHAN SEONG
He’s a very passive-aggressive person. Do not lecture him about his mistakes unless you’re prepared for him to stop talking to you for days.
JAKE KIM
He’ll nod along while wearing that exact “Why are you trying not to laugh? It’s disrespectful as shit bruh.” iShowSpeed expression. But then he’ll grab your waist, spin you around, mash his cheek against yours, and tell you how grateful he is to have someone who loves him enough to care.
SAMUEL SEO
He’ll click his tongue. He doesn’t think he needs your words of wisdom, thank you very much. At first, he’ll probably try to annoy you instead maybe pinching your boobs just to get a reaction. But once he realizes you’re genuinely serious, he will listen. Samuel usually doesn’t do things that warrant a lecture, but the AC hasn’t been working for days and he still hasn’t called the technician, so now it’s become a full-blown issue.
DANIEL PARK
He’ll probably cry. Not because he’s weak, but because he genuinely feels like he puts you through too much. Somehow, despite everything, he still thinks he’s not good enough for you. The lecture quickly turns into a cuddle session while you threaten that if he gets kidnapped again, you’ll personally ask the kidnappers to cut his dick off.
ELI JANG
Another sad puppy. Why would you even lecture him? He’s just a boy trying his best. He’ll look at you like he’s the most fragile being alive and make you pinky promise that he won’t repeat the mistake again. One kiss and he’s instantly happy. Honestly, not recommended to lecture him at all , your words can genuinely make or break him.
KITAE KIM
Honestly, RIP to you. What exactly were you thinking, trying to lecture him? He’d probably slice your neck apart and feed you to dogs. But hey, he’d at least respect your bravery first.
- So he’s really shocked when you refuse his money
- At first he didn’t really care, if you wanted to use your own money it wasn’t any of his business
- But then it starts to irk his inferiority complex
- Did you think he can’t provide for you? Does he not have enough money? Do you have more money than him? So you think you’re better than him?
- Eventually, every time you refuse his money or pay for him he turns bitter and would throw backhanded “compliments” at you to make himself feel better
DG/JAMES LEE
- He would find it really refreshing
- As an idol, people were only around him because of his money and popularity
- But seeing you refuse to take his money makes him see you as genuine
- He still offers to pay but doesn’t insist if you say no
- He’ll still spoil you with gifts and flowers tho because he thinks there isn’t anything else he can offer to you
ZACK
- He also thinks he should always pay for his woman and would absolutely love to buy you food and gifts
- So when you refuse to let him pay he’s a bit hurt and paranoid thinking you don’t like him
- You explain to him how important your independency and values are to you and he understands and respects it
- But he won’t give up and will always try to pay for you
- Specially if it’s a date, he will try extra hard to not let you pay but still respect your boundaries
A trend where you yell the words at your bf and try to hug him to see what he’ll do
Jonggun: *blows smoke in your face*
Goo: ‘I’m Gay!’
Gitae: *Strikes you with his axe*
James: *Dodges and walks past you*
DG: *Tries his best to be polite even though he’s restraining himself from being rude*
Daniel: ‘I’m sorry miss but i’m taken.’
Vin jin: *Probably shoves you very hard off him and will say some insults at you*
Vasco: *Gives you a lecture on how you should not try to get with a taken man nor try to invade their personal space because that can be disrespectful and rude*
Zack: *little bit flustered, but will try to get away and tell you you’re not as pretty as his gf*
Jay Hong: ‘…………………………’
Eli jang: ‘uhm…can you get off me?….i’m not single…’
Jake kim: ‘miss can you move it? I’m not exactly fond of being touched without permission.’
Hudson Ahn: ‘ 0/10.’
Jaegyeon na: ‘that touching you did will cost you at least 340.000.000. Won.’
Taesoo ma: *starts beating you*
Jichang kwak: *ignores you and tries to walk past you*
Jinrang: *stares for a very long time, looking rather unimpressed*
Gongseob Ji: *flirts back*
Seongji yuk: *Stares in utter confusion*
Samuel seo: *Grips your arm pretty hard with a rather creepy smile*
Eugene: *politely smiles but sets some distance*
Ryuhei Kuroda: ‘you’ll have to wait in line for that one girly.’
Sinu han: *awkwardly pats your back with a nervous laugh*
Lookism Boys & How They Flirt When They Actually Like You - Part 2
Summary: Disaster boy behavior but make it endearing, Part 2 Electric Boogaloo 🤪 Here’s Part 1
Author’s Notes: I already had a part 2 in mind so it’s nice that I got comments for more. After work yesterday night I immediately started on this part so I hope y’all enjoy. It’s still not NSFW
Word Count: 697
REQUESTS ARE OPEN!!!
Eli
Flirting Style: Smooth, attentive, and giving
Gives you the quiet eye contact and sweet half-smile that melts panties
Lowkey flexes how good he is with kids (“Yenna made you a drawing… I helped her, but don’t tell her I said that”)
Will say “you’re beautiful” once, then act like it was nothing. But it wasn’t nothing because
His love language is offering you food and asking how your day was with full attention and active listening.
Protective but not overbearing. Will bodyblock a falling shelf and act like it’s just another Tuesday.
Bonus: If you touch his arm while laughing? Play with his hair? Be a good presence in Yenna’s life? Game over. He’s yours.
Gun
Flirting Style: Intense eye contact and threats that sound like proposals
“I don’t need a partner. I need someone who can keep up.” (Translation: I want you.)
Doesn’t smile, but you know when he’s into you because he starts looking at you like you’re prey, and HE IS STARVING.
Gifts you things that don’t feel romantic… until you realize no one else gets them. Like a new phone. Or a whole ass penthouse (to act grown in).
“You need discipline” - he’ll say after fixing your form at the gym, his hands lingering longer than necessary.
Bonus: He purposely loses at video games he’s previously beaten. Not because he can’t win, but because your grin when you win is more satisfying than victory.
Goo
Flirting Style: Chaos and catcalling, but make it charming
Will call you every nickname in the book. “Sugar tits,” “baby shark,”or “wifey” - he’s def testing which one makes you react.
Pulls pranks just to hear you laugh… or scream. Either works for him.
Gets jealous easily but pretends it’s a joke (“Oh, he looked at you? I’ll murder him, Y/N. kidding! Unless…”)
If he’s quiet for longer than 10 seconds around you, it means he’s either in love or planning something stupid. Or both.
Bonus: He’ll flirt with everyone to throw you off. But only you get the soft, sleepy Goo voice at 3AM.
James Lee / Diego Kang
Flirting Style: Elegant, detached… until you touch him.
Doesn’t flirt traditionally. He just shows up, stares at you from across the room, and somehow leaves you breathless. (Not too far from canon lol)
Compliments feel like confessions: “You’re a distraction. And I hate distractions. But I keep looking at you.”
Will not initiate physical touch, but if you do? He’s not letting go for anything.
Dangerously polite. Opens doors, holds your coat, corrects your form at the private gym he booked for just the two of you. You’ll think he’s just being nice until he says something like - “I dreamt about you...again”
Bonus: One kiss and he starts spiraling privately. He’ll still act cool. He’s not lol
Ryuhei Kuroda
Flirting Style: Bully-to-lover with unhinged fixation energy
Constantly bothers you. Flicks your hair. Steals your pen. Won’t stop poking your buttons.
“Dumbass. You’re too cute when you’re mad.”
Treats you like a game until the moment someone else flirts with you, then it’s not a game anymore.
You get under his skin in ways he hates. And craves. He’d rather eat nails than admit he’s blushing.
Bonus: He’ll fake-disgusted moan if you touch him - “Ew, you’re touching me? Are we dating now or something?” (he hopes yes)
Hudson
Flirting Style: Gentle loyalty with hints of angst
He watches you with sharp eyes but speaks softly. He doesn’t talk much but when he does, it’s only to you. He also never brings up his street life because he thinks it’ll ruin how you see him (it won’t lol)
“Need anything?” - sounds sooo casual, but it means he’s already halfway to solving your problems before you finish answering.
The kind to memorize your favorite snacks, the exact way you like your tea, your allergies. Acts like it’s no big deal. (He gives your snack choices +100 points even if he doesn’t like them)
Protective as hell. If you so much as stub your toe, he’s ready to declare war on gravity.
Bonus: When he finally touches you, it’s hesitant and reverent—like you’re sacred. His ears might go red.
This was super fun to write! I wanted to add Sinu but I couldn’t think of what to say idk. Requests are open so have at it. BYE!!!
Eli's totally not sulking a little and getting clingier. You're getting the wrong idea. Yeah, he hovers a lot, but he always hovers. He simply wants to be close to you.
In all honesty, Eli tries his best to not make it your problem. He knows it's his own problems more than anything when he doesn't feel enough for you. It results in him trying to be more helpful in general. Mostly as a way to prove himself. To you? To himself? He doesn't know. He just has to be better.
Daniel would totally let you know, but he's extremely lighthearted about it. He keeps it mostly playful and teasing when he "interrogates" you about the other person, but he'd never needle you so much that it becomes a hindrance.
It's pretty easy to reassure him, too, just grab his face and kiss him silly. He'll forget what he was jealous about almost instantly.
Not jealous, only protective.
Jake is not jealous by nature. Like, yeah, he has immaculate taste, you're hot, capable, and amazing in general. He'd not be the only one to notice that. At most, he'd get teasingly "jealous" where he feigns dramatic and asks you if you're leaving him for someone else. He's very "haha lmao" about it in general.
Seongji is a little... too dense to get jealous. He knows something is amiss, but he cannot pinpoint what's wrong. Obviously, he's not dumb by any means, but if he has a cause to actually get jealous, then something really troubling is happening to your relationship.
He'd be pretty straightforward about asking if there's anything wrong, but he trusts you implicitly, so verbal reassurance would be enough for him.
Lmao what?
Hell would freeze over the day Gun gets jealous LOL... if you're up to anything sus in his eyes, he'd just give you a raised eyebrow, challenging if you really want to go there. He's possessive, sure, but only if someone aggravated you directly. If you choose to play with him, well, he's not one to chase someone who doesn't want to be his.
Pink and Red James are also generally too self-reassured to get jealous. He's so full of himself at those points in his life that he can't get over his ego to get jealous. If someone hits on you, he'd just have that condescending smirk on his lips. Like yeah, he knows they can't ever be to his level. Try harder, dweeb.
Do you really want to make him jealous?
Black James would be easier to get ticked off. If he has a hand on you at that moment, he'd immediately remind you of his proximity. Whether it's through looming or gripping your thigh, he'll make his point known. His patience is pretty thin when it comes to his, well, ownership of you.
Will use any excuse to be annoying
Goo isn't even jealous; he just wants to be annoying. He will pester and cling. Do everything possible to get into your space as much as possible. Will steer you away immediately, yap your ears off, glaring at the other person all dramatic. All of this is mostly to embarrass you in public; feel free to smack him.