Inheritance Detective

Detective Nao Haie stumbles upon a dispute over the estate of a mystery novelist, who left a video will despite knowing it wouldn't be legally valid.

Haie is asked to investigate a serial widow who has repeatedly enriched herself with the lucrative insurance policies of the men she marries.

The cat-loving proprietor of a shogi shop suddenly dies; his family discovers his will, which leaves his fortune to a curious name, Marie Antoinette.

A young woman volunteers to take over her grandfather's public bathhouse; Haie starts getting things in order, but an unexpected problem arises.