The Japanese distributor Getchu listed that the hentai doujinshi written and illustrated by Momiyama, “Onichichi Harem,” will have an animated adaptation with its first episode scheduled for release on December 13, 2024 in Japan.
While the hentai doujinshi is available in the nhentai catalog (521912), the production is handled by Queen Bee and the synopsis of the first episode reads:
Noboru Tenkawa is desperate for this world. In the deep forest where he finally arrives, he meets a woman of indescribable beauty. As he admires her, he slips on a cliff and faints. When he wakes up, women with horns attack him one after another. Overwhelmed by the use of their hips, and crushed by their huge breasts, this world was a paradise of boobs! And when Noboru is nursed by the breast milk of the village chief, his pants never shrink and he stays erect! The Local Festival fills him with happiness.