Namaiki na Gal Ane wo Wakaraseru Hanashi

She's a big sister with an attitude, and every time she opens her mouth, it's all just insults and negativity! However, her little brother has had enough, and he's got a plan to turn her into the cute, honest sister he knows she can be! To make it work, he'll first have to take her down a peg or two...

(Source: Yen Press)

Namaiki na Gal Ane wo Wakaraseru Hanashi is based on a web comic released under the title 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) on the author's Twitter account since November 16, 2023. Official serialization began in Tonari no Young Jump on July 12, 2024.