Sex Lessons in the Demon World

A humorous mythical tale unfolds as Yumi and her boyfriend Kichi share secrets in Yumi’s room while their parents are out. In the midst of their lovemaking, a mysterious black hole appears and transports them to a demonic realm. Yumi is violated and they are both forced into bizarre sexual positions. How will they find a way to escape this hellish world and make it back home unscathed?