As we noted last month for Mugi's birthday, it's been over a year and a half since the release of the K-on! movie. There's no actively running manga. There are no announced plans for new manga or anime. The K-On! Hōkago Rhythm Time arcade is pretty much the latest major bit of fuel for the K-on! faithful. This hasn't stopped otaku from continuing to celebrate the August 21 birthday of drummer Ritsu Tainaka.