Simplify the following text for a Grade 5 native English-speaking person.
Original: Yukihiro Yamase ( , born April 22 , 1984 in Sapporo , HokkaidÅ , Japan ) is a Japanese football player who currently plays for J-league Division 2 side Sagan Tosu .
Simplified: Yukihiro Yamase ( born 22 April 1984 ) is a Japanese football player . He plays for Sagan Tosu .