Oura Ryuichi whose real name is Yasuhiro Kajiura, is an actor, singer and author living in Tokyo. In 2014 he played the Ultra Party Guardians commanding officer in an Ultraman superhero TV series, a role that made him famous. He and ex-wife divorce when their son Sunowa was three. At first, the boy lived with his mother, but a traumatic incident during the Tohoku earthquake and tsunami disaster in 2011 proved the catalyst for the couple to change their son living arrangements. Oura remained in Tokyo to begin his journey as a single parent.
| Series | Candy Color Paradox | [Editor-in-chief] | 2022-12-15 |
| Series | Keishicho Kyokohan Gakari Higuchi Akira | Unknown | 2021-01-15 |
| Movie | The Real Exorcist | Doctor Onodera | 2020-05-15 |
| Movie | Yamikin Queen | 2020-08-05 | |
| Movie | Vamp | 2019-03-09 | |
| Movie | Immortal Hero | Doctor Torakawa | 2019-10-18 |
| Movie | The Band From Nowhere | Iga | 2018-06-02 |
| Series | Fugitive Flower | Takeda Shuji | 2018-04-14 |
| Series | Swim! | Hanyu Shinichiro | 2017-01-22 |
| Movie | Chūzai keiji SP 2017 | 2017-10-13 | |
| Series | Mr. Housekeeper, Mitazono | Shirai | 2016-10-21 |
| Movie | Kabuki Drop | 2016-06-25 | |
| Movie | Ultraman Ginga S the Movie: Showdown! The 10 Ultra Warriors! | Yoshiaki Jinno | 2015-03-15 |
| Series | Ultraman Ginga S | Yoshiaki Jinno | 2014-11-02 |
| Movie | Y.O.U Yamabiko Ongaku Doukoukai | 2013-11-30 | |
| Series | CSI: Crime Scene Talks | Unknown | 2011-04-13 |
| Movie | Lost Love Murder | Kotoura (Dentist) | 2010-04-01 |
| Movie | Door to the Sea | 2010-11-16 | |
| Movie | Kamen Rider Decade: All Riders vs. Dai-Shocker | Nobuhiko Tsukikage / Shadow Moon | 2009-08-08 |
| Series | H-code〜愛しき賞金稼ぎ〜 | 2007-01-13 | |
| Movie | Wet Red Thread | 2005-08-06 | |
| Series | GARO | Masaomi Tsuboi | 2005-10-07 |
| Movie | Tales of Terror from Tokyo and All Over Japan: The Movie | 2004-08-21 | |
| Movie | Nibanme no kanojo | 2004-11-27 | |
| Movie | 第三の時効 | 2003-02-24 | |
| Movie | Chain | 2003-07-19 | |
| Movie | Gokudô seisen: Jihaado III | 2002-07-08 | |
| Movie | Yakuza Jihad 2 | 2002-07-08 | |
| Movie | Yakuza Jihad | 2002-07-08 | |
| Movie | Ping Pong | College Couple | 2002-07-20 |
| Movie | Woman of Water | Yoshio | 2002-11-09 |
| Series | AIBOU: Tokyo Detective Duo | Kazuki Aoyanagi | 2002-10-09 |
| Movie | Labyrinth of Leg Fetishism | 2001-08-25 | |
| Movie | Hotoke | Shiba | 2001-08-25 |
| Series | The Best Friend | Fukabori Yutaka | 1999-10-18 |
| Series | Lost Paradise | Kinugawa | 1997-07-07 |
| Series | The End of the World | Mishima Jun | 1994-01-10 |
| Series | 男嫌い | 1994-07-14 |