is a Japanese footballer currently playing as a defensive midfielder for Vegalta Sendai.
In 2021, while studying at the Hosei University, Matsui was approved to be a designated special player for Kawasaki Frontale for the rest of the season, having agreed to join the club in 2022, when he graduated.
Renji is the brother of Japanese model and actress Airi Matsui.
Kawasaki Frontale