In this explicit exploration of forbidden desires, a married Japanese man, a salaryman by day, indulges in secret bisexual pleasures at home. He uses an everyday PET bottle as an impromptu sex toy, lubing it up and inserting it into his eager ass, simulating the feeling of a partner filling him with cum. As he fucks the bottle, he fantasizes about being with men, his strokes becoming more passionate and intense until he can't hold back any longer. He pulls out just in time to catch his hot load inside the bottle, his face a picture of ecstasy and shame.