Known as Masaaki Uchino (内野 聖陽 Uchino Masaaki) until July 2013, when he changed the pronunciation (though not the spelling) of his stage name to Seiyo Uchino (内野 聖陽 Uchino Seiyō).
Place of Birth: Kanagawa, Japan
Date of Birth: Sep 16, 1968
Hatsukoi
Gondō
What Did You Eat Yesterday?
Kenji Yabuki
ヘヤチョウ
Nobuhiko Kamamoto
ザ・ドライバー
Juichiro Konoe
罪の余白
Ando
海難1890
Doctor Tamura
時間の習俗
Kiichi Mihara
Black Kite
Yasuo Ichikawa
犬とあなたの物語 いぬのえいが
Detective Watanabe
十三人の刺客
Tosho Mamiya
I'll Still Love You in 10 Years
Hiroshi Maruyama
The History of Our Family
Kozo Masuda
Jin
Ryoma Sakamoto
Rinjo
Yoshio Kuraishi
252 生存者あり
Shizuma Shinohara
シリウスの道
Yusuke Tatsumura
Gonzo: Densetsu no Keiji
Kuroki
あかね空
Eikichi / Denzo
Fuurin Kazan
Gensuke
Fukigen na Gene
Minamihara Takashi
黒い家
Shinji Wakatsuki
Love Generation
Katagiri Soichiro
ハル
Noboru Hayami 'Haru'
Gogo no Yuigon-jo
Koji Kiyokawa
Aim for the Ace!
Munakata Jin
Seiyo Uchino