Umaru procrastinates in studying for an exam. Kirie Motoba, Umaru's classmate who often shoots eerie glares at her classmates, comes over to Umaru's house to deliver her lost student ID, coming across Umaru in her "himouto" form. Passing herself off as the little sister "Komaru", Umaru learns that Kirie isn't so much scary as she is too shy talking to others besides children. Later, Umaru gets spooked during a power outage after watching a scary movie.