Shinigami no Kikan ~Assassin~

Shinigami no Kikan ~Assassin~ is a Manga originally published in Monthly Comic Zero-Sum 2019. In the underworld, a man was feared as the strongest hitman, known by his code name "Nightshade." He was a master of a thousand techniques that could sever a target's nervous system, rendering them unable to perceive the world through any of the five senses, leading them to certain death. This "Reaper" was well-known throughout the criminal world. However, this individual no longer exists. He defied an order to protect a certain girl and was executed by the very organization he served. Seventeen years have passed since his death, and the man has been reborn, now living as an ordinary high school student.