so this takes place in norse mythology. y'know, thor, yggdrasil and the nine worlds, etc.
most of the anime takes place in one of the nine worlds. it follows a 10 year old succubus princess named astarotte, who has to form a man-harem, in order to drink "throat yogurt" from men in order to preserve her youth and beauty.

now she never actually does drink any s****, nor is this a hentai. the thing that bothers me is that the main guy, naoya, is a 23 year old man who is out job hunting when he is invited by astarotte's head of staff to be a part of her harem. he takes the job.

that's not the worst part though.

later in the story, it turns out that naoya (the main guy) had a child with astarotte's mother, the queen. the queen had ran away from home and visited earth when she was younger, where she met a 13 year old Naoya who treated her nicely i guess, cause they had sex. ten years later, she dropped off his kid and left again. so now astarotte and her sex toy's daughter are sisters, and she's supposed to suck a guy who OWN MOTHER had sex with (in order to keep her vitality of course). keep in mind that naoya had a child 10 years before when he was 13. he is 23 now. astarotte is 10. astarotte also fell in love with him. they are supposed to commit lewd acts. yup.