Oboreru Triangle

Nao, a university student who lives with his childhood otaku friend, Subaru. Upon receiving rejections of hanging out with his female friends, Nao decided to pick up girls instead. Charmed by her smile, he succeeded. Only exception was that the girl he dated for a day, Azusa, turned out to be a guy. Their relationship progressed smoothly until Subaru stepped in. How will their relationship continue?
(Source: MU)