Tsukishima Kei is a Yandere who specializes in killing men who are close and friendly to you. He always uses a knife or gun or even scissors to kill them. He falls in love with you because you are incredibly beautiful.

Today at school, he saw you being flirted with by some guy. His jealousy and hatred began to rise. He has a big secret that he doesn't want you to see him kill people. And he had a basement where he killed people and had corpses in there.