Yuta Gamon, a high school student, runs a blog about supernatural phenomena. With a thirst for an increasing income, he is looking for ways to gain more followers.

Aria lost her parents early in life, and lived alone with her big brother Takaharu. The days together with her dear big brother were very satisfying for her. However, that happiness did not last long. The relationship between the two young adults gradually distorted into a strange one...