Who Isn't Sleeping?

Overview

While heading home from school together one day, Aya announces she will have the house to herself tonight because her parents are on a trip. At fist she attempts to casually tell them she is lonely, but her friends ignore her. The girls attempt to cook in Aya's kitchen, but in contrast with Aya's insistence on carefully measuring the seasoning, Yoko says she can eyeball the amount.