The Heiress and the Chauffeur(2010)

Ojousama no Untenshu

At an all-girls school during the Taisho era of Japan, rumors swirl that heiress Sayaka Yoshimura is having a forbidden love affair with her chauffeur, Shinobu Narutaki! Sayaka scoffs at the rumors, but could a romance between master and servant actually be brewing?

(Source: Viz Media)

Note: Chapter count includes the extras "Ruka to Touzoku" (Luca and the Bandit), "Yonenmae no Chikai" (The Promise from Four Years Ago), and "Tsunagu Kizuna" (The Ties That Bind).