Mr. Brain Online
Tsukumo Ryusuke is a quirky, yet brilliant neuroscientist working for the National Research Institute of Police Science. Wielding a unique perspective and psychology, Tsukumo tackles the nation's most baffling crimes and scandals, going head-to-head with the most brilliant and twisted criminal minds. But his eccentricities and poor social timing can also aggravate people and circumstances, further complicating matters.
| Series cast summary: | |||
 | Takuya Kimura | - | Tsukumo Ryuusuke 8 episodes, 2009 |
 | Teruyuki Kagawa | - | Tanbara Tomomi 8 episodes, 2009 |
 | Haruka Ayase | - | Yuri Kazune 8 episodes, 2009 |
 | Mao Daichi | - | Sasa Miharu 8 episodes, 2009 |
| Yasufumi Hayashi | - | Iwabuchi Kiyoshi 8 episodes, 2009 |
| Sei Hiraizumi | - | Funaki Junpei 8 episodes, 2009 |
| Shunya Isaka | - | Namikoshi Katsumi 8 episodes, 2009 |
| Yukina Kinoshita | - | Cleaning Lady 8 episodes, 2009 |
| Katsuya Kobayashi | - | Seta Ippei 8 episodes, 2009 |
| Yûjirô Komura | 8 episodes, 2009 | |
| Tortoise Matsumoto | - | Nanba Jotaro 8 episodes, 2009 |
 | Hiro Mizushima | - | Hayshida Rinda 8 episodes, 2009 |
| Shiho | - | Mariko 8 episodes, 2009 |
| Osamu Shitara | - | Kanda Junichi 8 episodes, 2009 |
| Yûji Tanaka | - | Natsume Mitsuo 8 episodes, 2009 |
| Shigenori Yamazaki | - | Ochi Koichi 8 episodes, 2009 |
| Hiroyuki Onoue | - | Member of crime lab 5 episodes, 2009 |