Simplify the following text for a Grade 5 native English-speaking person.
Original: Kohei Nishino is a Japanese former football player who played for Japanese club Oita Trinita , Mito HollyHock and Fagiano Okayama F.C. .
Simplified: Kohei Nishino ( born 15 April 1982 ) is a Japanese football player . He plays for Fagiano Okayama .