It is about a girl whose father divorced her mother, and her father married another woman, which made her very dissatisfied and ran away from home. He was trained as a killer by a boy he didn't know. He went to a noble school and discovered the secret of this school - the students in the student union were all killers. This caused a huge change in her destiny, and his feelings for her also changed...
This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.