The Crystal Assassin (Assassination classroom)

This story is about a 15 years old boy called Yuko Yeager, He was in class a but He got suspended because he got in a fight with his Physical 'friends' and lashed out on a teacher called Mr tagger, (Just pretend that there's a teacher called that!) Because he told him that he was a complete failure in life and he doesn't need that to go on his record. if you want to read about his life then COME ON LETS GO!!!
(P.S. i will be making my own story line up but i don't own assassination classroom)