Aizawa, Kouichi

相澤虹一

Rokujo's 14-year-old classmate, who studies nindō under Kumohira. While he typically displays an energetic demeanor around others, he becomes serious and relentless regarding his ninja duties, and is apparently fascinated by death.
[like] are never created again."[/spoiler]
He was born on July 31.

Spoiler

[spoiler]It is later revealed that his love of death is a result of his own inability to die. His immortality is attributed to the holder of the Shinrabanshō during the Edo Period, who was a medical practitioner, experimenting with placing the wisdom of the Shinrabanshō into animals, since humans usually died. There were only two survivors of the experiments, both of whom gained immortality as a result. Kōichi's ultimate goal is to find a way to die, as well as ensure that "monsters