Arashi rejecting Hajime might have caused the two to not to be able to connect anymore. With Hajime being in a rut, Yayoi explains to him that it might have been the age difference that caused a misunderstanding between the two. Coming up with the idea that if both of them were the same age, they may be able to understand each other better, Hajime, Yayoi, Kanako, and Sunglasses time travel to when Arashi was 13 years old. Once they arrive in the past, Hajime and the others are overwhelmed by the mansion that Arashi lives in.