あらすじ
“Of all characters... why did I have to become Musclebrain!?” After regaining his memories of his previous life, Muscular discovers that he has been reincarnated as a character from a game he once loved. Unfortunately, his new identity is a physical-strength-focused musclehead character whose role becomes increasingly irrelevant as the game progresses! However, Muscular possesses a natural talent that even he himself has yet to realize... Rise from being an underappreciated character! No matter how unreasonable the situation or impossible the challenge, he will solve everything with his fists. A physical-combat-focused fantasy begins!