he was human that was experimented to a monster. She was a normal human girl looking for a love in life. the too come a cross each other. Honoka takahoshi is a beautiful 24 year old women who becomes a art teacher in kunugigaoka JR high. every guy wants her. She so beautiful that she could kill a man that would look at her. if looks can kill that's what they would say. But when She meets Koro sensei they discover some feelings for each other and lost past . could she save him or will she have to kill him to save the earth.