A young princess succubus who, at the age of 10, must start her own harem.
As a little girl, she loved to be with her mother, Mercelída Ygvar. One night, Mercelida has a surprise guest, one of her male lovers, join her in bed. Unbeknownst to Mercelida, Astartotte was sleeping next to her. The two made love while Astarotte watches in horror. Since that day, she hated men.
Astarotte Ygvar is created by Yui Haga as one of the main characters, and there is no current information regarding any inspiration used to create her. She first appears in volume 1: chapter 1 and episode 1. She is voiced by Rie Kugimiya.