Emma, Vol. 1 (Volume 1) by Kaoru Mori

Calling upon his former governess, William Jones, gentleman, is startled when his knock is answered by an uncommonly beautiful servant, the soft-spoken Emma. Throughout his visit, William's eyes drift to the maid whenever she enters the room, and he contrives to meet Emma socially as she goes about her errands. But London society is a web of strict codes and divisions. For the son of a wealthy merchant, seeking out a working-class girl is simply not done! William's father plans for his son to marry into the peerage and elevate the Jones family to greater heights, but although William says and does what is expected of him, he longs only for Emma's company...