if you want to visit Yuya Matsushita Website, you can go to this website :
http://www.matsushitayuya.com/

if you want to visit his official blog you can go to:
http://6109.jp/matsushitayuya/

if you want to go to his Facebook fanpage :
https://www.facebook.com/#!/Ufanpage

you can follow his official twitter @U_Staff or U_fanpage

or you can join his fanclub at:
http://yuyamatsushitafanclub.com/