Kento Nanami

The salaryman sorcerer

Kento Nanami is a grade-1 sorcerer who once quit the jujutsu world for an ordinary office job, only to conclude that all work is equally hollow and return to sorcery. World-weary, blunt and reliable, he becomes an unlikely mentor to Yuji Itadori.

The Ratio Technique

Nanami’s cursed technique, the Ratio, divides any target along a 7:3 line to create a guaranteed weak point, letting his blunt cleaver strike with critical force. Methodical and efficient, he fights like a professional clocking in — precise, unglamorous and devastating.

A man of principle

Nanami keeps strict hours and despises overtime, a running joke that masks a deep, weary integrity. He treats Yuji not as a weapon but as a kid who deserves honesty about how cruel their world is, offering him rare, grounded guidance.

Shibuya

Nanami’s death at the hands of the cursed spirit Mahito during the Shibuya Incident is one of the series’ cruelest blows. His final words to Yuji — a simple charge to carry on — sharpen the young protagonist’s grief into resolve, and cement Nanami as the mentor the story mourns most.