In Busamen Gachi Fighter, Shigeru Yoshioka is a socially withdrawn ex-salesman whose life collapses after a false accusation. Seeking a second chance, he is transported to a fantasy world and purposefully sacrifices his physical appearance—locking his looks stat at –255—in exchange for unimaginable strength and abilities. Now an overpowered “Absolute God,” he joins a party that includes Seika, Seiji, Reeze, and others, each with unique powers tied to a mysterious “Special Notes” system. While facing monstrous threats and dungeon challenges, Shigeru grapples with trauma, emotional isolation, and slowly rebuilds trust through his team. The series blends irreverent isekai tropes, bizarre humor, and surprising emotional beats as Shigeru discovers that strength alone can’t conquer all.