The title of the sixth volume of the series of novels Ore ga Suki nano wa Imouto dakedo Imouto ja nai by Seiji Ebisu has revealed that the adaptation of the animated television work previously announced will be released in October.

Suzuka Nagami 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 older brother, and the the novel wins a light novel award. After they discuss the matter, Yuu is the one who debuts as a proxy light novel author instead of Suzuka, under the pen name Chikai Towano.

Ebisu launched the series of novels in 2016 under the Fantasia Bunko label and with illustrations by Gintaro.