Yuki was born in Tokyo and grew up in Germany. He moved on to Boston where he started taking acting classes "to see a script from the acting point of view." Aside from being an actor he performs as a voice over artist and a simultaneous interpreter. His father played for a German orchestra and his mother taught at a Japanese school.His first film was a German TV movie filmed in Frankfurt, Der Millionär und die Stripperin (2001). He has also worked with directors such as Peter Bogdanovich, The Cat's Meow (2001) starring Kirsten Dunst.