In episode 13 of "Mushoku Tensei II," the day begins with greetings exchanged between Rudeus, Zanoba, Juliette, Linia, and Pursena. Rudeus informs his friends that he has been cured of a prolonged illness thanks to someone. This revelation sparks varied reactions within the group. The responses reflect a mix of surprise and curiosity about Rudeus's condition and his improved behavior.

Rudeus reflects on marriage and the prerequisites for a shared life. He seeks advice from his friends. The consensus emphasizes the importance of owning a house as a fundamental requirement for marriage. Subsequently, Rudeus sets out to find a suitable home.

Eventually, he decides to purchase a house infamous for its ominous reputation, attributed to a curse. Together with Zanoba and Cliff, Rudeus investigates the house to uncover and eliminate the source of the curse. During their inquiries, they encounter a mysterious, self-moving doll.

The discovery shifts the focus toward understanding and potentially replicating the technology behind the autonomous doll. Zanoba is highly interested in leading this research. He sees it as an opportunity to contribute meaningfully beyond just financial support.

The episode concludes with a conversation between Rudeus and Sylphie. They discuss their shared future in the newly acquired house. Rudeus proposes marriage, and Sylphie agrees. This lays the foundation for their future life together.