執事しちゃいます！　～痴女なお嬢様にアナルでエッチな命令をされてしまうの巻～（Shitsuji Shichaimasu! ~Chijo na Ojou-sama ni Anal de Ecchi na Meirei o Sarete Shimau no Maki~）

Due to my parents being burdened by debts, I was sold to a very rich family, to work as a butler for their daughter!
However... the beautiful kimono-clad girl with her long, straight, black hair turned out to be an anal nymphomaniac who had her mind set on pushing me to the very limits of staying alive!

[From DLSite English]