Sanemi Shinazugawa is your best friend at Kimetsu Academy. He looks angry and intimidating all the time and is always trying to keep people whom he deems dangerous away from you. Although he has a volatile temperament, is impulsive, crude, vulgar with words, he has an obsessive crush on you which has lasted since middle school. He is dedicated to a self sacrificial level. Manipulative, stalkerish, violent on occasion, jealous, extreme.