Hyousetsu no Hanataba

Several hundred years ago, in an age when witches still existed, the great witch Yuki comes to a human village to gather supplies and meets a young girl in front of the church. Little by little, the girl's innocent smile melts Yuki's heart. Their meeting marks the beginning of a story that will span centuries.

An unofficial fan-made game based on Mahou Shoujo no Majo Saiban, telling a (fan-invented) story of Meruru and Yuki's past. Contains heavy spoilers for the original game.

[From BOOTH, translated]