A story about how, when I started making an effort to become the perfect older brother that my perfect sister could be proud of, my sister's behavior began to change slightly.

The protagonist's younger sister, Miyuki, is a perfect sister who excels in both academics and martial arts, and possesses a beautiful appearance. As for her older brother, he has no redeeming qualities and is constantly scolded by Miyuki and always receiving her help. One day, the older brother begins to make an effort to become a brother that Miyuki can be proud of. He works hard at both studying and sports, thinking that if he doesn't rely on Miyuki, she will be happy too. However... This work is also posted on "Kakuyomu." This is a story about the desire to have a younger sister who uses respectful language.