Matsunaga (Nakajima Kento) rejected Natsumi (Wakazuki Yumi)'s confession. After returning home, he noticed that Miji (Takahashi Hikari) was anxious and uneasy. Matsunaga told Miki about his and Natsumi's past and told herMeiji, his relationship with Xia Wei is over.

Kentaro (Mukai Koji) heard this in the dark and became convinced of Matsunaga's feelings for Meiji.But Matsunaga still believed that Meiji was underage and that he was the guardian and did not recognize the relationship.

Kentaro hopes that Miji can feel Matsunaga's feelings, so he discusses with Asako (Kurogawa Tomoka).In order for Matsunaga to consider Miji as his love partner, the two planned a date at the aquarium.The advertising design work started to get on the right track, Matsunaga got busy, but was deceived by Kentaro and readily agreed to date W.

Meiji, who had no idea what adults were thinking, was innocently happy to be able to play with her roommate members again.On the other hand, Ling (Fujiwara Daisuke) cannot end his unrequited love for Meiji because the relationship between Matsunaga and Meiji has not progressed yet.

On the day of the date, Kentaro and Asako broke their date, leaving Matsunaga and Miji alone in the aquarium.