Boukun no Cinderella: Taisho Dekiai Roman Tan

"You're going to be my Cinderella." It is the Taisho Period. Sakura has always been treated cruelly by her step-mother and younger sister in the home of the Shirahoshis, a fallen noble family. Rinko, her younger sister, gets engaged to an heir to a powerful conglomerate and is set to be introduced as his fiancee at her debut party. Sakura attends her party, but is ridiculed by the other guests due to Rinko's cruel scheme. Right then, Eisei Kuroyuki, an heir to Japan's most powerful conglomerate, steps in to help her. Known for his ironfisted ways, Eisei never bows to authority no matter who they are, even if it's a member of the Imperial Diet. Why would such a man fall for Sakura and dote on her? A Cinderella story with passionate romance begins!! Oh, and filled with plenty of justice served for Sakura's enemies as well! (Source: Manga Plaza)