Aoyama Haru and Kagaya Kaede have been friends since they were 4 years old, when they began living next door to each other. They are now 24-years-old and still live in the same apartments. Kaede has held feelings for Haru for the past 20 years, but Haru doesn’t seem to realize her feelings for him. She talks about this situation with her childhood friends Iori and Mio and decides to give up on her feelings for Haru. But, it's not easy for Kaede to disconnect her feelings for him. Meanwhile, Iori has liked Kaede since he was an elementary school student. He approaches her. Seeing this, Haru becomes disturbed. In fact, Haru made a promise with Kaede’s late mother and he is honoring it.

The storyline is basically the same as in the original work, although there are many parts where logic is omitted. The dialogue and narration have been reconfigured considerably, with some of the speakers being changed, but almost all of it is composed of words extracted from the original work. However, with the exception of Kindaichi, all the characters are played by women, the dialogue is almost barbed, and the clothing deviates slightly from what is appropriate to the situation, thus eliminating any sense of reality. The reason why Nanako's jumper and Washio's trousers were needed is not clear, as the murderer swims to Nanako's room in her clothes. In addition, Lieutenant Kamio's subordinate is simplified to only one detective, Aoki.

Betrayal spawns an unexpected night through the streets of Tokyo for two strangers left questioning the meaning of life and love.

Against the landscape of Japan’s historic Shikoku pilgrimage, Shinji is a grief-stricken alcoholic whose only companionship comes through conversations with the ghost of his late wife Haruka. As his daughter Kyoko struggles to keep their fractured home together, Shinji drifts further into delusion, finding his sole tether to reality at a bar run by Mari. After his self-destructive behavior drives Haruka’s ghost away, father and daughter set out in search of her, confronting grief, memory, and the possibility of spiritual reconciliation.