Hina's life has been unsuccessful since birth. She is an ordinary teenage schoolgirl. She is very shy. She is teased and insulted at school, and even beaten. Even at home, she doesn't feel at peace, because her older brother beats Hina when her parents aren't looking. A normal day at school. Hina is depressed, never smiles. And has dark thoughts. But suddenly...

Teacher: Class! Welcome our new student!

Hina was sitting at the desk.