One day, an 8-year-old girl named Mari meets Michika in a bamboo grove, and thanks to a series of mysterious events that Michika causes, Mari's world changes completely. Tashima Roshima, the talented author of "Mizu wa Umi ni Mukatte Nagareru" and "Kodomo wa Wakatte Agenai" (Children Don't Understand), presents a gentle but slightly grotesque girl-meets-girl story with a touch of mythological flavor.