M Oujo-sama to S Shitsuji(2015)

M Oujo-sama to S Shitsuji

"I'll do anything for you."

To pay for her mother's hospital bills and repay her debts, Mari works day and night, but the only thing that keeps her going is the time she spends with Tokiwa, the butler who works there and visits the "Toudou" mansion for work. One day, the man she admires, Tokiwa, suddenly proposes to Mari...!?

However, when Tokiwa appears next, he is dressed as a butler for some reason and calls Mari "Miss."

(Source: Shueisha, translated)