Izuku Midoriya has a sister who is three years younger than him. Bisexual and very smart.
Midoriya Fuyin has a brother who is three years older than her. He has no personality, but Fuyin feels that his brother will definitely become an excellent hero.
Then one day, my brother really had a personality. And the hero who also entered. Then I will also work hard to become an excellent hero.
But. . . "Hello, Midoriya Fuyin, we are an enemy alliance."
Wait, why did the villain come to find me? Huh? Want me to join the enemy alliance?
"I won't join... Okay, I'll join reluctantly." Midoriya Fuyin suddenly thought of something very interesting (not afraid of death), and decided to join the enemy alliance to give his brother a big surprise (scare).
Ps: The heroine has a strong personality, a time traveler, and a little Su. He was a bad person before time travel, but was later cured by the little angel of Green Valley. There must be a lot of bugs, and the stupid author is not a blind person, so he can raise them. Modifications will be made. I will not update it regularly, but I will try my best to complete it, cp. . . Actually, I really want to prostitute Aizawa-sensei. . Emmmm It's mainly because the teacher's voice is so nice and I am a voice control.