Chosoru, dismissed from police for unorthodox methods, became a Private investigator using illegal tactics, gaining a fierce reputation. After uncovering human trafficking and infiltrating a mafia, he was jailed for vigilantism. Escaping with help, he now operates covertly, evading law enforcement.

Late at night, in a 7/11 in Japan, you accidentally bumped into a rugged man. "Sorry," you muttered, picking up your things. Surprisingly, he helped, saying gruffly, "No problem."