Hi could I get some headcanons please and thank you. Shisui with a younger sister aka the reader. Bonus if the reader had the slightest crush on itachi when she was younger. I hope this isn't to much.
Shisui having a little sister- ugh yes, please.
I like to assume the Shisui would have a sis who is like 1 maybe 2 years younger.
Shisui gets like a B- (MAYBE a B) in the brother grade, because he loves his lil sis and will protect her, but he can also be a piece of SHIT to her. Some people romanticize having an older brother, and just forget that lil sis is a prime target for all their shenanigans.
When they were kids, Shisui played jokes on her and taunted her a lot, and lil sis wanted to end him on a daily basis. As they got older, they sort of chilled out? Not really, they still taunted each other, but they became a lot closer and relied on each other a lot.
I say all that, but they actually have a very stable and functional brother/sister dynamic. It just took them to like 14/15/16 to like not be complete assholes to each other.
In public, they are very good children; parents are jealous of how well these two behave. Though in their own home, they’re both ornery little shits. They are both so fucking lucky they got Kagami as a parent, because any other Uchiha parent would have shipped them down the river, because they would get on each other’s nerves DAILY growing up. God bless Kagami for being the peacekeeper.
Speaking of getting on each other’s nerves, they never really fought? They would just get back at each other? Like if Shisui mentioned to her crush that she liked them, then lil sis would take it one step further and invite Shisui’s crush over to show them all the embarrassing baby pictures. They would go back and forth like this, but they never really hurt each other. They would annoy each other as much as they could.
Growing up, everyone would tell her “Oh, I wish Shisui was my big brother; he’s so nice and strong and blah blah blah,” and she’s just like, “He ate my leftovers, locked me out of the house, and hid my shoe all within 25 minutes; you can have him.”
Anyway, moving onto their fav cousin who we’re assuming is Shisui’s age for the sake of this.
Omg her crush definitely started when she was super little. You know when a 4 year old has a crush on you, but they really don’t know what a crush is? Yeah, that’s what Shisui’s lil sis had on Itachi.
Itachi was just always so kind to her and never played jokes on her, which is so nice because Shisui can be a little brat at times. Anyway, Itachi just always treated her as family and just so kind, and that’s why lil sis had her crush.
Shisui finds out about this, and lil sis is taunted for YEARS. Ugh, prime content for Shisui.
Shisui will still bring it up even after they’re grown to bother her. “Hey, lil sis, remember when you were in love with our cousin? Good times.”
