[Tetsu no Hako (Tetsurock)] Tonari wa Nani o suru Jinzo {Chin²}

A taller male neighbor quietly opens his door to a younger male, inviting him to use the bath and toilet while promising to stay in the living room. The younger boy appears uneasy, prompting the adult to ask if he is alright, and the tension quickly turns erotic as the adult's anal opening engulfs the boy's tight body, with the adult exclaiming how good it feels. The scene culminates in a heated exchange of moans and desperate pleas, highlighting the raw intimacy of their yaoi encounter.