Description: Seido 3rd and 2nd years as your brothers (season 1). Like how they would act if you were their little sister/sibling by 1 to 2 years.
Notes: Recovered in conjunction with an anonymous researcher, we thank them for their contributions. Had to split this because this was a lot of characters, but it was fun!
Second Years
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Tanba
You’re two years younger
If you’re as shy as he was in his first year, he is capable of standing up for you
Like, if your food order is wrong and you mumble a complaint he will ask for your order to be fixed
This only works for you, he could get the complete wrong order and it could be cold and he won’t complain
Once he gets more confidence he still does it, even if you can ask for it to be fixed yourself
Generally has complete faith in you, so he isn’t super protective when it comes to who you associate with
Is protective over physically injuries though, kind of a worry wart
Yukki
You’re one year younger
You play shogi together, when he gets a smartphone you get him a shogi app that lets you play while he’s in uni
Look, between him and Masashi you have no choice but to learn about baseball, i’m sorry
Maybe you end up playing baseball/softball yourself, or maybe you become Seidou’s manager
He’s quietly protective of you, his aura is kind of intimidating
He’s cool to you in a good big brother kind of way, but you also know he’s a massive dork
Tries to make your big extracurricular events, especially since he lives at home, has attended them in his sweaty practice uniform
Jun
You’re two years younger
He steals your manga all the time when he’s home, and he pretends he only knows anything about it because of you
He’s not a very convincing liar
Definitely an overprotective big brother, guys are afraid to talk to you
I imagine no matter your main personality, you have a loud aggressive streak
One day he’s yelling outside and you slam the classroom window open and scream for him to shut up
After that day no one questions your relation every again, of course assuming you’re usually quieter
Chris
You’re two years younger
The kind of brother to teach you to ride a bike
You would tag along to all of his practices when you could, just so you could get a popsicle after
Treats you like an equal, you’d help each other with homework (read: you try and help him, but there’s not much you can do, you end up learning a lot though), making food, ect.
Supports whatever extracurriculars or academic pursuits you have, even if he can’t make all of the events
Likes to pick you up randomly, he stops after hurting his shoulder and you’re both waiting for the day he can safely pick you up again
You kind of drifted apart when he got hurt because he just shut down, but he invites you to the game he plays with Sawamura and while he can’t pick you up afterwards he does give you a big hug and apologizes
Ryou
You’re two years younger
And you’re Haruichi’s twin, if you’re not adopted that is
Whatever the case, i feel like you and Ryou playfully bully each other
But he’s the only one allowed to bully you, like with Haruichi he will get into fights for you
On that note, no partner will ever be good enough in his eyes
He’s also a bit closer with you because you aren’t chasing after him like Haruichi, but he tries not to make it too obvious
The absolute last thing he wants is to ruin your relationship with Haruichi because of his own issues, ever the self-sacrificing and self-aware brother
Masuko
You’re a year younger
Before he left for Seidou you guys would make pudding together in the middle of the night
Or take midnight trips to the convenience store to get him pudding and you whatever you want
You two definitely have a weird language only you two understand
He’ll lay on top of you, keeping most of his weight off you so he doesn’t crush you but still trapping you
You’re relationship is pretty playful, definitely filled with little prank wars
Kuramochi steals your email from his phone and he straight up tells the shortstop that he will never let him date you, he’s a little protective
“The heck? He’s totally fine! (Drop Kick) You Dick! Your Senpai hit a homer off you! You’re a newbie, get at least a little bummed out, jeez! Don’t just sit around watchin’ TV like nothing’s wrong!” - Kuramochi Yoichi
Sawamura Eijun just chilling while adorably eating Masuko-Senpai’s pudding (without permission, ehem) Or as I see it, the ace wannabe holding a grudge of Masuko-Senpai’s home run hit earlier that day and taking his petty revenge by eating his Senpai’s pudding
when you and masuko first made love, he couldn’t stop palming your plushy ass, and so, everytime the two of you cuddle he already has his hands touching your bum
But, now when he opens his favorite pudding and watch it jiggle in the container, he’s reminded of your ass — the fatness of your cheeks bouncing as he slaps the absolute hell out of them, earning a loud, gaspy whine from you
If you wear short skirts, or tight fitting shorts – his mind is gone, his eyes watches your every move until he have you in his bedroom sitting pretty in his lap as he palms your thickness so nicely
His favorite past-time is showering with you, allowing his hands to roam your body and he loves helping you clean areas you can’t see, but he spends hours rubbing soap on your ass(mostly to play with the plush flesh)
i’ll add more later if I think up of more headcannons