Mr Lipstick

On her first day as a teacher, Kumarika forgets to check the school schedule, running afoul of the school’s owner. Now, she fears not only failing her assessment, but being dismissed. Kumarika is shocked to find the owner won’t fire her after all and is actually flirting with her! She does not take him seriously, and ignores all of his ongoing advances. Feeling their sister may need protecting, her brothers begin investigating her would-be suitor’s background.
(Source: ThaiDramaticUpdate)