第 3 集: 真晝發現朔夜與椿的副班級有關聯，並對兩人的友誼產生懷疑。
2016年7月19日 播出
Mahiru finds out that his best friend, Sakuya, is actually one of Tsubaki's subclass. Why did he get close to Mahiru in the first place? Is Sakuya truly Mahiru's friend or is that another one of the lies that Sakuya hates so much? (Source: FUNimation)