It Has To Be You || Karma Akabane X Reader

Let say that you are Tadaomi Karasuma daughter. No, you're not related but he took you in when you were 10, ever since then he has been a second father to you. You're smart, clever and a great assassin for a kid. You're the top of your class, you're supposed to be in class 3-A but you ended up in class 3-E, the end cl...