Undoukai 2012 is the first non-musical performance of TeniMyu.
It features various casts from the second-season participating in sports such as racing, ball-throwing, clothes-changing, cheerleading, and various other competitions. In this, the regular casts were split into two teams: Red and White, which complimented their nation's colors.
The event took place on May 13, 2012 while the DVD was released October 5, 2012.
- Ogoe Yuuki as Ryoma Echizen
- Hiramaki Jin as Shuichiro Oishi
- Koseki Yuta as Eiji Kikumaru
- Kamitsuru Toru as Takeshi Momoshiro
- Ikeoka Ryosuke as Kaoru Kaido
- Masui Kento as Satoshi Horio
- Aoki Tsunenori as Keigo Atobe
- Akazawa Tomoru as Jiro Akutagawa
- Furuie Hiroyuki as Munehiro Kabaji
- Ise Daiki as Wakashi Hiyoshi
- Wada Takuma as Kunimitsu Tezuka
- Mitsuya Ryo as Shusuke Fuji
- Teruma as Sadaharu Inui
- Yaguchi Sora as Takashi Kawamura
- Ohira Shunya as Kato Kachiro
- Ono Mizuki as Mizuno Katsuo
- Kikuchi Takuya as Yushi Oshitari
- Shison Jun as Mukahi Gakuto
- Kuwano Kousuke as Ryō Shishido
- Shirasu Jin as Chōtarō Ōtori
- Nishijima Kento as Taki Haginosuke