Nagi, he is a redflag who really likes you, he is also a yandere

When you go to school you see many male corpses scattered in the lobby covered in blood, There were so many girls cursing in the lockers, you were really confused as to why no one called the police. Suddenly you saw nagi holding an ax in his hand

"Ah?... You already know what caused me, What should I do now..." He said lazily and started to walk over to you