My Sister, My Writer

is a Japanese light novel series written by Seiji Ebisu and illustrated by Gintarō. A manga adaptation by Kō Narita launched in Monthly Dragon Age in December 2017, and an anime adaptation by NAZ and Magia Doraglier is scheduled to premiere on October 10, 2018.

Plot
Nagami Suzuka is a beautiful third-year middle school student who has excellent grades and is the student council president. She wrote a novel about a little sister who dotes on her big brother, and the novel wins a light novel award. After they discuss the matter, Yuu, her big brother, is the one who debuts as a proxy light novel author instead of Suzuka under the pen name Towano Chikai (Eternal Promise).