Synopsis

Architect Kosaka Aoi met Mizuki at a party three years ago, and the two married and welcomed a son, Ren. Their happy family life is shattered when Aoi is diagnosed with terminal cancer and given just three months to live.
 
As Aoi struggles to balance treatment and work, he discovers that Mizuki has been having a secret affair with her lover, Kenji. Worse still, the pair are plotting to claim his life insurance and inheritance after his death. Determined to protect his son, Aoi teams up with trusted allies to gather evidence and take revenge on Mizuki and Kenji.