Kekkai [結界]

Kyoko was found at the scene of a brutal murder by chief inspector Kaoru. Due to the shock of the incident, Kyoko has lost her memory. Kaoru has asked Junichi, a suave psychiatrist, to help cure Kyoko, only to find out that she has multiple personalities. Who exactly is Kyoko, and what connections does she have to the murder? (Source: MyAnimeList)