Taiko Drum Master's new 3DS installment has chibi dragons, and chibi virtual idols too! Famitsu.com has first screens of the game's Hatsune Miku collaboration which will see the popular virtual idol appear in a couple of songs.
See Famitsu.com's report for a look at some of the other collaborations, including Monster Hunter, Doraemon, and Idolmaster.
The site also posted pics of the special styluses (styli?) that will be included with game.