Kotona Minami

Tazuru is a college student working the night shift alone in a convenience store. The manager of the store, who has been missing for days, is found dead in the basement, with his eyes gouged out. Tazuru tells the police the creepy events that unfolded on the four previous nights: getting sent mysterious SD cards with disturbing videos on them, the door chime ringing with no reason, weird things on security camera, being visited by a weird old lady looking for her grandson, and a creepy ghost boy. Inspector Sawatari is initially incredulous, but then similar events start happening to him too.

Kiyoko Tachibana, a student at an integrated middle and high school for girls in Tokyo, met Akari Okusawa, who was wearing a bright blue dress, at the start of the new school year in her first year of high school. In contrast to the other students, Akari freely interacts with everyone and quickly becomes popular, and Kiyoko is attracted to her. Kiyoko's newly awakened feelings for her soon involve the whole class, and the situation develops into a disturbance.