I Reincarnated as the Musclehead Character Who Becomes Obsolete in Late Game, but I Still Chose to Master Physical Combat

“Why of all things… did I have to become the muscle-brained Muscular?!” After remembering his past life, Muscular discovers that he has been reincarnated as a character from a game he loved in his previous life. However, he was reincarnated as a physically specialized, muscle-brained character who becomes less useful during the latter half of the game?! But Muscular possesses a natural talent that even he himself hasn't realized yet…!? Rise up from being an underappreciated character! Whether it's unreasonable or seemingly impossible, solve everything with your fists! A physical-combat-focused fantasy begins!

(Source: Kodansha, translated)