In the fourth episode of 'Yamabuki SSR Body Changes,' our titular character undergoes another stunning transformation, his once lithe form now adorned with rippling muscles and an enormous cock that strains against his tight shorts. He explores his new body, tentatively stroking his massive dick, before succumbing to the urge to masturbate furiously. His moans fill the room as he pounds his thick meat, his ass clenching with each thrust. Cum splatters across his washboard abs, leaving him gasping and spent.