The Woman Who Keeps a Murderer(殺人鬼を飼う女)

When Kyoko was a child her stepfather loved her sexually. She took refuge in the world of fantasy and multiple personalities. Kyoko has three flat-mates now one of whom is a lesbian who is into Kyoko. In turn, Kyoko is beginning to be horny. Unfortunately, this is not helping Kyoko's precarious mental state.