On the day that Meiji (Hikaru Takahashi)'s uncle Masahiko (Morihiro Yamaguchi) left Japan, the shared house held a welcome party for the new tenant Meiji.At the welcome meeting, Matsunaga (Kento Nakajima) announced that he would formulate special rules for Meiji.

“ Door lock at 5:30”, “ No spending money indiscriminately ”, “ Go to bed early and get up early ” - Kentaro (Kouji Mukai) and other members of the shared house suggested to Matsunaga that he is almost like a father from the Showa era.Meiji reluctantly accepted.

That night, Matsunaga, as a designer, asked Miji for her opinion on the binding of the novel.

Because the content of the novel is a campus love story, I wanted to hear the voice of Meiji, who is in her 10s.However, after showing Miji two different designs, Matsunaga asked“ which one do you like?” and got an unexpected answer...

The next day, Matsunaga returned home after finishing the meeting at the publishing house. It was already past 5:30 in the evening, but Miji had not returned yet.Not only that, they still couldn't be contacted at 8 o'clock in the evening. Asako (Kurokawa Tomoka) and Kentaro were both relaxed, but Matsunaga was uneasy.Moreover, Matsunaga was accused by two people of being a high school student who loves to play, but they set annoying rules for her. The restless Matsunaga looked for Miji everywhere.Then, I found Miji walking in front of the station with an unhappy expression...