Namaiki na Gal Ane wo Ore no Houhou de Wakaraseru Koto ni Shita Hi
生意気なギャル姉を俺の方法で解らせることにした日
A brother becomes worried about his younger sister after she transforms into a Gyaru and begins acting out against him. Determined to help her, he decides to make her understand his perspective through his own methods.
