Taiko no Tatsujin: 15-shuunen Kinen Short Animation
Japanese title: 太鼓の達人15周年記念ショートアニメーション
Alternative titles: Taiko: Drum Master, Taiko no Tatsujin: Juugo Shuunenkinen Short Animation
Type: CM
Source: Game
Episodes: 1
Status: Finished Airing
Aired: Jun 25, 2015
Duration: 33 sec
Rating: G - All Ages
Studios: Studio Ghibli
Themes: Video Game

Toshio Suzuki and Studio Ghibli produced the short to commemorate the 15th anniversary of the Taiko no Tatsujin (Taiko: Drum Master) rhythm game series. The short features Taiko no Tatsujin characters Don-chan and Kacchan, as well as an original mouse character. The short will also be broadcast as a TV ad later. 

(Source: ANN)