When the SSS Rank Became Passive

Cha Su-ho, the world's only F-class helper and dismissed as trash. He thought he would die a meaningless death without ever making any contribution in his life. But when he came to his senses, a one-and-only SSS-class hunter was inside his body?! There has never been a helper like this before. Active skill: Helper, Passive skill: Hunter. From F-class to SSS-class, Cha Su-ho's leap begins!