Keiichi was born in Tokyo, Japan and migrated to Australia with his family.
In 2012, Keiichi was cast as Sakamoto, a chief officer in
The Railway Man (2013). He acted beside
Jeremy Irvine. He then played a ninja in
The Wolverine (2013) alongside
Hugh Jackman. In 2013, he was cast as Omori Guard in
Unbroken (2014), and worked with
Angelina Jolie.
Since then he has been continuing to work on feature films and TV series.