I Returned To Being A Yakuza Underling

Matsuoka Shou, the average person who got involved unknowingly into the largest Yakuza groups in Japan, rose up to the very highest ranks, only to get killed at the very end of his life. But as death pulled his soul from the mortal coil, he found himself back in that same old room, that old apartment, where peace lingered, and conflict didn't exist. He was back, in his younger self, aiming to take revenge on those who wronged him.