could someone help me find this?

hi! there was a either shoujo or josei i read a ages ago. i think it might be a collection of stories, i might be wrong.
but i remember one of the stories was about an immortal witch who meets this boy in the village. at some point, he professes his love for her, but he's mortal so well, he dies. but he gets reincarnated a bunch of times and they get to meet again. i think the witch has red hair. idw spoil, but the ending is rlly sad