A text box entrusted to the tree by Tsuyoshi Kusanagi.There are memory items of Mr. Toshi, the father of Koharu (Jun Kazuki) and Makoto (Yuri Nakamura).Itsuki and Makoto embark on a journey to trace the footsteps of their parents who were in illegitimate love.On the other hand, Yuzuha (played by Rikako Yagi) was asked to do something by the mother of her poisonous parents who asked her for money... At this time, Kaito (played by Shiono Eihisa)!?

One morning, Itsuki (played by Tsuyoshi Kusanagi) was called out by Isobe (played by Masatoshi Nakamura) and heard the story of the death of his son Fumiya.Isobe said that on the day Fumiya committed suicide, there were no relics in the room that could prove his suicide, but there were only signs that they had been taken away.Was it the work of a company trying to hide the truth about the death?Isobe knows that there are still people committing suicide in Fumiya's workplace, so Shu goes to discuss it with him.

On the other hand, Koharu (played by Jun Kazuki)'s pre-death arrangements are proceeding as planned, and Makoto (played by Yuri Nakamura) also appears there.Shu was very happy to see Koharu smiling happily while holding the items of memories, but Makoto suddenly asked if he could see the father he once loved again.However, these words said unintentionally made Xiaochun very angry, and the mother and daughter quarreled again.Makoto was kicked out of the room.After a while, Ashu, who was sorting out the cabinet, found a beautiful book box.Inside are memorabilia related to Makoto's father.Taking this as an opportunity, Shu and Makoto embarked on a journey to trace the footsteps of “ Koharu and Koharu's beloved father ” whom they had never met.

At the same time, Yuzuha (Rikako Yagi)'s mother, Marina (Akiko Hinata), comes to her again to ask for money.When Yuzuha refuses and says he has no money to give her, Marina makes a surprising proposal.Kaito (Ehisa Shiono) heard their conversation in the dark...!?