Sai

As lonely student Yuri agonizes over her future, a mysterious man appears before her. She comes to trust him, but then a terrible disaster occurs.

Mechanic Kuramoto caused a person's death in a drunk-driving incident. As he tries to confront his mistake and move forward, a man appears before him.

Cleaner Iori's shyness prevents her from enjoying life, until she gets to know hairdresser Minagawa. As they grow closer, a man appears before them.

Fumiya struggles to revive the fortunes of his late father's inn. As he and his brother grow distant over a bitter rivalry, a man appears before them.

As Domoto and Kikuchi investigate a fatal accident and Iida tries to find the figure linking a series of suspicious deaths, a man appears before them.

Housewife Misae discovers her husband's secret. Domoto and Kikuchi close in on the man behind several seemingly unrelated suspicious deaths.