Origin
Seiren
A rare and magical creature from Seiren. Miharu adopts her as a pet, although in the anime she originally wondered if Ebi would taste good. She resembles a plump miniature seal with the face of a cat and a pair of large bobbing antenna, which causes Miharu to claim she resembles a shrimp. On one occasion, Tomoka transformed Ebi into a small green-haired girl to show off her magical knowledge.
Girls Bravo
Girls Bravo (Japanese: GIRLSブラボー Hepburn: Gārusu Burabō) is a Japanese manga series written and illustrated by Mario Kaneda and serialized from 2000 to 2005 in Shōnen Ace by Kadokawa Shoten. The story focuses on a high school boy who is allergic to girls who is transported to a mysterious world with a mostly female population; when he returns, one of the girls from that world becomes his housemate. source: wikipedia
