Osananajimi no Imouto no Kateikyoushi wo Hajimetara Soen Datta Osananajimi ga Kowai

Aisa, a childhood friend who was a popular and attractive girl during school, has grown distant from the protagonist. Now, the two no longer have a close relationship. However, Aisa appears to have been focused on Kouki all along. When Kouki becomes the tutor for Aisa’s younger sister, Minami, their paths cross again. The story is a romantic comedy involving Aisa, the unapproachable class idol, and Kouki, who is intimidated by her cold demeanor.