Death game

A cursed girl named Hanora Comika and a half wizard boy Joran Cambus?Will they find a way to break the curse?What'll happen if the fact is more difficult than they thought?
One day,A werid girl transferred into his school.And later,they find out each hidden self.Altough they went through some fight at the first,they become friend.
He find out the reason why she hate seven alot and why she keep pushing people away,the reason she must be lonely.That all because of a curse that will kill all the people around her every Seven years since the day she got it.