The Boy Who Ruled the Monsters: Before I Knew It, the Ultimate Specialized Support Skill Led to the World's Ultimate Party! manga volume 1 features story by Sin Guilty and art by ketsuyuki tamon.

Black Tiger is a party of five up-and-coming prodigy adventurers known as the Miracle Children. Among these big names, Sol Rock was the only black sheep—mocked as a useless support mage, treated like a grunt, and eventually even kicked out…But the truth is, he has the strongest talent of all—Player! This godlike power allows him to buff his allies and control the flow of battle. And now, with no party to call his own, he begins to assemble the strongest group the world has ever seen…