Zenryoku Usagi are hardworking construction builders &mdash; who happen to be rabbits &mdash; with a simple motto: "Zenryoku+Dai-ichi" ("Give everything you've got and be #1.") The animated shorts were aired in Japan within the Chibi Ani Gekijou; (Tiny Anime Theater) program on Friday or Saturday mornings, depending on the station. Ikeda and Media Factory have created two books and numerous spinoff goods featuring the characters. <br><br> (Source: Saikin Anime Jouhou)