Mujisaki

I only remember that the plot was about the FL saving the ML. The ML lived in the FL's house, but after some time, he left her without saying goodbye. A few years later, the FL was accused of being a witch and was about to be burned by the villagers. At that moment, the ML came back to save her, and by then he had already become a duke or the heir to a noble title.

Pleaseeeee help me ╥﹏╥