1x6 - My Stepmother and Stepsisters Aren't Wicked

Miya has settled into life at Eihou Girls' Academy, and meets Koyuki Inari, a classmate who has been absent since the entrance ceremony. Though shy and timid, Koyuki is the eldest daughter of the influential Inari family, whose vast intelligence network earns even Arisa's respect. Drawn to Koyuki's quiet nature, Miya soon discovers she's carrying a secret burden.