When I start being a home tutor for my childhood friend’s younger sister, the unfriendly childhood friend is angry ~I am completely unaware that she – my high school idol – likes me

His childhood friend Takanishi Aisa is a popular beautiful girl even when the two were in school. It’s not a surprise that they now are estranged. But, Aisa have only had eyes for Kouki…? As Aisa’s younger sister Minami’s home tutor, the two once again come into contact. It’s a romantic comedy about the unfriendly class idol Aisa and Kouki who is afraid of that cold attitude.