Yashahime: Princess Half-Demon (2020)

Half-demon twins named Towa and Setsuna were always with each other, living in peace in Feudal Japan. But their happy days come to an end when a forest fire caused the two to separate and Towa is thrown through a portal to present-day Japan instead. There, she was found by Souta Higurashi, who raises her as if he was her own child after Towa realizes she was unable to return to her time.