Enemy, I Love You!

The Promise is a Vietnamese BL series about two stepbrothers and their budding romance. The feisty teenage protagonist has a rocky relationship with his older stepsibling. After getting into trouble at school, the main character is surprised when his nemesis shows sympathetic support. Their relationship improves, but they must navigate their vague and uneasy feelings for each other.

Huy, a promising young cook, was fired from the five-star restaurant where he worked by his boss, jealous of his talent. Without any more income, he still has to take care of his younger student sister. At the same time, Thang, a childhood friend, resurfaces. Although they didn't part on very good terms the last time they met, they ended up starting a catering business together. As they work together and face different obstacles, their feelings begin to change.