Back when I had a lot more time to try and sample shows as they aired, one that caught my attention was Astarotte’s Toy.
The series focuses on Astarotte, a succubus in the world Álfheimr of who has the unwelcome reality of needing a harem in order to survive as she gets older.
Known originally as Lotte no Omocha!, the series was based on the seinen manga by Yui Haga.