Game of Love

Phlapphla, who works as a writer, has to look after her brother Tong on her own and without the help of Treepradub, their eldest sister who married a wealthy man and never gave her a hand.
One day, Tong has an argument with Pheem's brother who is later knocked unconscious by Tong. This causes Phlapphla and Pheem to meet, and their first meeting is disastrous as she slaps him across his face. However, Phlapphla is at a disadvantage due to his sister's assault case, so Pheem gives an offer to become his woman in order to save her sibling.
(Source: Thaidramatic_update; edited by Soju at MDL)