Kemonokko Tsuushin The Animation __exclusive__ -

Listed under various production credits including ROJIURA JACK . Kemonokko Tsuushin: The Animation: Season 1 (2021) - TMDB

Hiro Kuroda, a young man insecure about his short stature, hates the taste of milk despite everyone's advice to drink it to grow. Through a strange smartphone app, he inadvertently summons Bell, a cow-girl from another world. Bell becomes a farmer in Hiro’s world and, noticing his plight, offers him a special "homemade" milk that helps him grow and leads to a deeper, "lovey-dovey" relationship.

Tatsuomi, a sickly high school student, tries to call an ambulance one night but accidentally dials a mysterious service instead. They send Rupia, a harpy who heals him using a magical egg. The following morning, Tatsuomi must help Rupia manage the intense physical side effects caused by the healing process.