The High School Girl's Confidant · Jealousy and Secret Research Episode 5 / 6
Driven by jealousy after seeing the Kiryuu sisters interacting with other boys, Sensei confronts Saori and Sawa with intense encounters at school. However, upon returning home, he discovers the sisters have dressed up in provocative costumes to surprise him. The girls reveal that their conversations with the boys were actually research to find ways to make Sensei happier, leading to a passionate reconciliation and a mutual confession of love.
