Erika and Nagi are stuck in a power outage. Nagi goes to the front door to find an emergency kit, when the unthinkable happens.

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

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

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.