The episode serves as a turning point where Kazuki begins to move forward from his trauma.
With Kazuki gone, Rei is forced to handle single parenthood. When Miri catches a fever, Rei struggles to find child-safe medicine and ultimately seeks help at Kyutaro’s cafe.
Kazuki encounters Karin at Yuzuko’s grave. Instead of blaming him, she encourages him to forgive himself and find his own happiness, acknowledging that he is capable of making Miri happy. Themes & Character Growth
Flashbacks reveal that five years prior, Kazuki's pregnant wife, Yuzuko , was killed in a car explosion during one of his missions. He has carried the guilt of her death ever since, regularly sending money to his sister-in-law, Karin , as a form of penance.
Overwhelmed by the repetitive grind of housework and parenting, and feeling unappreciated by Rei and Miri, Kazuki storms out to reclaim his old life of drinking and gambling.
Watch these reactions and reviews to see how fans reacted to Kazuki's tragic reveal: