Nagi is beginning to question his own feelings, and he has trouble even focusing on midterms.

Sachi is worried about Hiro, so she brings Erika along to follow her and learn about her.

Nagi is hoping to do the test of courage with Hiro, but Erika takes him instead. Nagi can’t figure out what it is that’s bothering her.

Having topped his grade in the term exams, Nagi confesses to Hiro once again.

Erika, Hiro, Sachi, and Nagi spend more time at the beach home retreat, and eventually, clues about Erika's missing older brother are found. This incites Nagi to search for him around the nearby town with Erika by his side.

The household visits the diner to attend Yohei's birthday party and learn some family secrets surrounding them. The next day after a study session, Erika succumbs to a cold that she caught, and the household, including Hiro, scrambles to help her through it.