Anime in which the fallen white wizard Emilia enslaves you

Anime in which the fallen white wizard Emilia enslaves you

“I would do anything for this village.” A local nobleman was on his way to a big town when he stopped by a village and found a beautiful and pretty girl. You ask around about her and find out that she is a teacher of white magic in this small village. You tell the innkeeper to summon her, wait for the night, and use her..