Socially awkward Takeo rescues a girl on the train. When she comes to thank him, he finds himself falling in love with her.

Takeo's heart beats faster every time he receives a text from Yamato. However, he starts to believe that Yamato has feelings for Suna and attempts to help them out.

When Takeo and Yamato finally have some alone time together, Takeo is shocked when Yamato starts crying.

When Takeo discovers that's crush was on him all along, he is over the moon. However, Takeo is put to the test when an incident occurs between his and Yamato's friends.

Sunakawa's sister returns home for a visit and reacts oddly to the news that Takeo has a girlfriend. To make matters worse, Yamato begins to act strangely as well, but only Ai seems to notice.

Takeo becomes concerned when he notices Yamato's state of unhappiness. However, her worries are much different than Takeo could ever imagine.