Shishunki Kyoudai

Overview

Yosuke Hino is thinking about when to change his pronoun from “boku” to “ore.” His main worry is his twin sister Mikage. Whether it is his height, studies, or athletics... Mikage beats him out in every aspect, and this has caused Yosuke to have a hard time with other girls. Now that he is in his second year of junior high , he wants to make some changes — but... (Source: Wani Books, translated)

Source: AniList