俺が好きなのは妹だけど妹じゃない (Series) favorite_border

[DeepL Translation - needs review] Volume 1: Ryoka Nagami is the younger sister of a junior high school student who is a beautiful girl, has excellent grades, and is also the student body president. She wrote a novel about a sister who dotes on her brother and won the Ranobaku Grand Prize!　Instead of my sister, who doesn't know what a ranovel is, I, her older brother, will be making my debut. ......?

(Translator: DeepL)