S1, E5: Sae is advised by Ms. Kujo, an exam tutor, to let Ruri, her daughter's rival, Miku to stay with them. Surprisingly, Miku's believed-deceased dad is actually Sae's husband, Hideyo! Miku conceals her true identity, sparking intrigue within the household, especially towards Sae's husband Hideyo, who is oblivious to the potential family disruption. (C)SLL/tv asahi. All rights reserved.