I think the plot was there was a noble who was secretly helping the 2nd prince faction and the general by sending notes, but the note sender took his credit so when the 2nd prince faction won, his father was killed beside him and he was made into the reward of the ML who was the general(?). i think both MLs have grievances against him. Like the prince who was angry at him for dropping a handkerchief.
Its fully colored, BL , royalty themed.
I think the plot was there was a noble who was secretly helping the 2nd prince faction and the general by sending notes, but the note sender took his credit so when the 2nd prince faction won, his father was killed beside him and he was made into the reward of the ML who was the general(?). i think both MLs have grievances against him. Like the prince who was angry at him for dropping a handkerchief.