Chotto Edo Madeเอโดะ มหานครใหม่ในศตวรรตที่ 21; ちょっと江戸まで

From Baka-Updates: What if the Meiji Restoration never happened? Bakufu still holds sway, the class system has never been abolished, and there is no westernization. The story is set in modern-era Edo, which had never been renamed to Tokyo, where people go to Kabuki for entertainment and hang out at pancake house. It centers around Sobi, the sister of an Edo magistrate who goes to school with Michisato, who prefers to be called Michelle, the eccentric son of the ruling Tokugawa clan's Mito family.