Kenta Kamakari (鎌苅 健太, Kamakari Kenta?, born on February 17, 1984 in Osaka Prefecture) is a Japanese actor and voice actor, famous for his role as Ryo Shishido in the Prince of Tennis Musicals. He was hospitalized on April 21, 2007 and was unable to play the role of Minami Itsuki in Musical Air Gear vs. Bacchus Super Range Remix and appear in Dream Live 4 ~Extra~. As he mentioned in his blog, as of February 2008 he is completely recovered and will start working again.

Source: Wikipedia