There is a family photo in the room of Reitaro (Takezai Terunosuke) who lives alone.This photo is also an opportunity for his wife Kazumi (Moemi Katayama) to put tape on her home.Ichika and his classmate Hikaru (Tanaka Koki) pursue the mystery of the photo.

In the photo, Reitaro, Kazumi, and young Ichika have happy smiles on their faces, but part of them has been cut off.According to Kazumi, that was a warning to Reitaro.Although this photo seems to be related to “something”, when and where was it taken?What happened to them in the past?Ichika works with Hikari to find clues.

During this period, Kazumi suddenly started going crazy.Ichika's class teacher Ogino (SWAY) fanned the flames and convinced Kazumi that Ichika and Hikari were dating, so Kazumi forcibly took Ichika and broke into Hikaru's home.

Kazumi bluntly told Hikari and her mother that she hoped Ichika would cut off all contact with them from now on, and then left without any explanation.Light and mother were stunned.Hikaru's mother watched from the sidelines as Hikaru looked for a chance to talk to Ichika at a loss and began to contact Reitaro.

In fact, she began to quickly get close to Buntaro a few days ago. Hikaru's mother is Sayoko (Misozaki Ayame).