Former erotic gravure idol Rina Wakamiya brings huge 93 cm I-cup breasts and an exceptionally cute face to a Valentine's Day fantasy. When she brings chocolate to a senior she likes, his two adult friends pressure her into sexual challenges supposedly meant to win his attention. Though reluctant at first, she submits to breast stimulation with an electrical device, deep-throats three huge cocks, squirts repeatedly, and has her enormous breasts shaken through rough group sex. The finale has the men taking turns on her pussy and filling her with repeated creampies.