The Five Brothers.

The Five Brothers follows the Juthathep brothers in the 1960s, raised by their grandmothers after their parents’ tragic death. Born into nobility, they are expected to embody honor, protect the weak, and—most importantly—marry well. But their lives become more complicated when a sacred promise binds one of them to marry a lady of the Dhevaprom family, and breaking it would bring great dishonor.