Futaro proposes an exam to settle the debate of whether or not the quintuplets need a tutor.

Futaro is hospitalized for a while after falling sick at camp school. He returns to work tutoring the quintuplets, only to realize someone has fallen way behind.

It’s the last day of camp school. Itsuki is missing. Futaro thinks he knows where to find her, but he’s sick and shouldn’t be wandering in the snow.