'The Key') is a 1959 Japanese satirical[1] comedy drama film directed by Kon Ichikawa.

In addition, he tries to awaken the interest of his daughter Toshiko's fiancé, assistant doctor Kimura, in Ikuko, convinced that his jealousy will bring his manliness back.

However, Kimura's main ambition for becoming part of the Kenmochi family is financing his continued studies with Kenji's money.

Later the detectives read Ikuko's diary and, thereby discovering the incestuous love quadrangle, ascribe all three deaths to suicide, despite Hana's confession.

[5] Odd Obsession was entered into the 1960 Cannes Film Festival, where it won the Jury Prize.