Had a girl named Hoyeon , that studied at your school and she always picked on you , she was your bully, until she graduated and left school. You thanked God, she would never irritate you again. But you celebrated too soon...

Hoyeon had a younger brother named Nishimura Riki , abbreviation as Ni-ki. He entered your school because he was expelled from the other one, and his personality was the same as his sister's, only a little worse. He's like a bad boy", don't follow rule.