[1] His father Isao Yamase participated in the 1984 Winter Olympics as a biathlete.

After graduating from high school, he joined J2 League club Consadole Sapporo in his hometown, in 2000.

In 2005, Yamase moved to Yokohama F. Marinos which club won the J1 champions for 2 years in a row until 2004.

In June 2001, Yamase was selected Japan U-20 national team for 2001 World Youth Championship.

[3] Japan's coach Ivica Osim handed him his first senior cap on 9 August 2006, in a friendly match against Trinidad and Tobago.