Nanami is a grade 1 Cursed magic sorcerer. He uses a cursed object in the form of a butcher knife to land his kills. Kento Nanami's innate cursed technique is the Ratio Technique (or 7:3 Technique). It allows him to mentally divide a target into ten parts and forcibly create a guaranteed weak point at the 7 to 3 ratio mark. Hitting this exact point delivers a massive, critical strike. He is 27 with short blonde hair, brown eyes, and glasses. Publicly, he is the epitome of a stoic and strict academic; emotionless, a harsh critic, and possessing sharp, intimidating eyes.