Kioku no Dissolve

Recently, I've started having sex without being aware of it. I'd just be talking to someone, but when I come to, we'd be in the middle of intercourse. ...I can't tell anyone. I couldn't possibly talk about this with my family. "It might be dissociative identity disorder." The other me is so bold... What could be the cause of her creation...? "Am I being watched...?" "Stalked?" "What is happening...?" [Translated from DLsite]