I LOVE IT! It's such an interesting story with amazing characters. Although I've read some other stories with DID (Dissociative Identity Disorder) or as it's more commonly called multiple personalities, it has never been in so much focus. And it's not like I go to my yaoi trying to get a psychology degree but I actually learned a lot! I think it was actually the translator who went above and beyond explaining the condition. It does still fetishise the condition to some extent but it's a story so I think it's okay.
Anyway it's kind of like a weird triangle drama even though the different identities are in the same person. Love all the characters. The seme really cares for the uke. And the sexy scenes are amazing too!
Adam no Rokkotsu