
Quick answer — Kazuma Horie voices Ryuu Tsuji in S.A: Special A, Noa in KIBA, Kaname Tanuma in Natsume's Book of Friends Season 1 and 8 more characters.
Kazuma Horie voices Ryuu Tsuji (S.A: Special A), Noa (KIBA), Kaname Tanuma (Natsume's Book of Friends Season 1), Seiji Yagiri (Durarara!!), Tadashi Samura (I Can't Understand What My Husband Is Saying), Kazuya Kurauchi (My-HiME), Kenji Ogata (RideBack), Snow Lily (SERVAMP) and 3 more.
Ryuu Tsuji is voiced in Japanese by Kazuma Horie.