Meshiya no Musume wa Mahou wo Tsukaitakunai?

Celica, the signboard daughter of an eatery, cheerfully helps out at her family's store every day. One day, in order to save a boy who was involved in an accident, she suddenly uses magic. She hurries to escape from the accident so that it will not be discovered that she used magic. She wants to hide her ability and continue working at her favorite restaurant, but a marquis named Daniel appears to her and gives her a ring, explaining that it is to protect her from a man. However, the ring is worn by the marquis's fiancée. She rushes to return the ring, but it won't come off. While Celica is in a quandary, Daniel comes to the restaurant every day, saying that he is here as a guest.....? She wants to return to her peaceful life! Will her wish come true?