Answer
Matsui joined Jubilo Iwata in 2016. He had previously played for Sagan Tosu and was a member of the Japan national team. Matsui made his debut for Jubilo Iwata in the 2016 J1 League season and quickly became a key player for the team. He helped Jubilo Iwata win the 2016 Emperor's Cup and was named the J1 League MVP for the 2016 season.