Kokoro Logic Manga

By: Shina Akino

Natsume Aoba a young man who is going out with a guy named Onozaki Yohei. Yohei though has a thing called "multiple personality disorder."There is Yoji, easy-going and only does what suits his mood.There is also Yoko, a female personality. Very elegant and has common sense.Last there is Yoichi, very selfish and arrogant... he is the most troublesome.