In this exciting episode of Buddy Daddies, we learn more about Kazuki's background, his relationship with Rei and Miri, and the emotional challenges they must face together. The story begins with Kazuki feeling overwhelmed and unappreciated as he handles most of the household chores. To teach Rei and Miri a lesson, he spends the day away from home, forcing them to take care of themselves.

During his absence, Kazuki visits Kyutaro's café and shares his frustration with him. Kyutaro tells him that his sister-in-law Karin has returned the money he sent her. This leads to a deeper exploration of Kazuki's past, revealing the tragic circumstances surrounding the death of Karin's sister Yuzuko and his sense of responsibility for this loss.

Meanwhile, Rei and Miri face their own challenges when Miri falls ill and Rei has to take care of her. The episode also shows Kazuki visiting Yuzuko's grave, reflecting on his past, and contemplating his next steps. Karin encourages him to live his own life and make Miri happy.

When Kazuki returns home, he finds the house in disarray and Rei and Miri asleep. The next day, they try to make breakfast for Kazuki, and Miri gives him a new umbrella as a touching gesture.

This episode unveils some of the secrets from Kazuki's past and provides valuable insights into his character. The revelations may be shocking, but they enrich the story and pave the way for future developments. It remains to be seen whether Kazuki's backstory will continue to influence the series or if the focus will shift to new plotlines. Overall, this episode skillfully combines emotional depth with character development, leaving the viewer eagerly anticipating the next installment.