A story about a noble lady eating junk food and saying, 'This is delicious!'

Marie François Chantine, a noblewoman who seems out of place in modern Japan. With her beautiful appearance and seemingly flawless looks, one might expect her life to be elegant, but...? She's actually working as a day laborer in a factory!? Seeking a special drink after work, the noblewoman heads to a pub frequented by commoners.