she's mine (yandere stepbrother x fem reader)

After a scary misfortunate event happened (F/n) flees in the arms of her mother away from her insane father.

Living on the road with her mother comes to an end when she remarries. (F/n) then gains an older Stepbrother!

But what happens when years later (F/n)'s father comes back to take her. Will her Stepbrother, Itsuki, allow it? Or will he keep her all to himself?

(This is a temporary description because it's so bad. I'll think of something better eventually.)