Etotama

The main characters for both shows (Momoka and Nyaa-tan) are conniving, sneaking monsters that either make or break the show for the viewer. Both shows also have a pink-haired, arguably masochistic girl that lusts after the main characters (Mo-tan and Urara).  

Both Juuni Taisen and Etotama's characters are based on the 12 chinese Zodiac and have fights between them. But while Juuni Taisen is serious, darker and most of its characters have tragic backstories, Etotama is comedic, light-hearted, parodies several anime tropes and the characters are colorful. In Juuni Taisen, the Zodiac representatives fight in a battle royale to have a with granted. In Etotama, the characters are literally the Zodiac spirits and the protagonist (Nyaa-tan) is a minor spirit who wants to join the main 12, and so has to make all of them acknowledge her power by beating them. Finally, both have very good visuals and action, Juuni Taisen handling the grim atmosphere well in a 2D environment, while Etotama switches between regular 2D visuals for comedy/SoL scenes and gorgeous and astoundingly well-animated action in 3D. read more 

Both are Good shows with too many characters and not enough episodes making the characters kinda bland but still kinda likable and both try to experiement with 3D/CG Animation