Kurou Kumogakure

Kurou Kumogakure serves as a low-ranking operative within the ninja organization known as NIN, spending his days lying low in a cheap apartment under the guise of an unemployed drifter. Despite being a descendant of the distinguished Kumogakure clan, he projects an easygoing and aimless demeanor—until a covert assignment sends him undercover into Koudan High School, where his remarkable combat instincts and composed decision-making come to light, revealing a mysterious ninja whose elite abilities are carefully hidden beneath a carefree facade.