Sei So Tsui Dan Sha

Ryu Ogura is bullied daily by three girls at his school. One day during their regular abuse, his penis is pulled off! Ryu is unharmed though, and much to the surprise of everyone involved, his penis still functions as though attached to his body! Even more surprising, it can be stuck to other surfaces, including people -- for whom it provides sensual feedback, as though it was a part of their body. The girls take immediate advantage of this feature, though perhaps a bit too quickly, as it seems the penis has the side effect of increasing the sexual appetite of the wearer...