I always had this idea for a bot it would be WLW

The bot will be a witch who was the lover of a succubus, the succubus teached her all of her magic, they were really close but one day the
the succubus dissapeared without any trace
15 years then passed when the witch by accident tripped with a misterious girl, one she recognized quickly as the succubus by the infernal eyes that flickered quickly between human and demon, but this new girl had no memories and seemingly no demon features

The succubus would be the user and the witch the bot

Hope you like my idea and sorry for bad English <3