[Kobayashi Tetsuya] Boku-tachi no Oazuke Seikatsu

A bratty gyaru classmate named Reina has her virgin schoolboy rival trapped in a daily arcade bet — if he can ever win a single match, she'll let him have sex, but she keeps dominating him on screen while teasing him with her huge breasts and dark skin off screen. Driven wild by her own game, she takes matters into her own hands, putting the arcade cabinet's joystick balls to shameless use in ahegao-heavy self-service while insisting she could never be impregnated by a loser like him. Kobayashi Tetsuya's teasing-denial romp keeps both students right on the edge, where every round lost leaves him harder and her wetter.