In this after-school adult-student role-play, five introverted but secretly horny humanities students research sex so they can draw better erotic manga. With no experience with men, they use each other's bodies to study kissing, caressing, and strap-on sex. They claim it is all for their manga, but their lust soon runs wild in the all-female clubroom. Eager to test their findings, they lure away a harmless-looking man and plead, “We won't tell anyone, so lend us your cock!” Then they put their research into practice with bare-cock sex.