Okusama ga Seito Kaichou! S01E10 - Sawatari-san's Midsummer Presentation

While waiting by the school entrance, Hayato sees Sawatari fall down while carrying a huge backpack, and brings her to the infirmary to rest. Sawatari suspects that Hayato and Ui's relationship is more than it appears, so she follows him home. Things quickly fall apart once she is invited inside.