Sakamoto Days Vol. 1

Taro Sakamoto is an overweight convenience store owner, but his true identity is that of a legendary assassin who was once feared and admired by all evildoers! After meeting his wife Aoi, he left the crimefighting world to settle down and start a family. But danger has a way of finding him, and he’ll have to use his know-how as a hitman to protect his humble life and keep his family safe!
Notice: This book is written in Japanese.