Mr. Lipstick (2021)

Original title: แต้มรัก

During the first day of being a teacher, Kumarika runs into a big problem when she fails to check the school schedule. Due to her unawareness, she ends up fighting with the man who owns the whole school causing her to fear that she will not only fail her assessment but lose her job. Kumarika is shocked, however, to find the owner only flirts with her instead of firing her. Not believing him to be serious about her, she begins to ignore his all of his advancements. Her two brothers, on the other hand, begin investigating his background in order to protect her.