Ryūichi Yokoyama Ryūichi Sakamoto Ryūichi Sugiyama Ryūichi Hiroki Ryūichi Kihara Ryūichi Yoneyama Ryuichi Abe Ryūichi Inomata Heartbeat (album de Ryuichi Sakamoto) Ryuichi Hirashige Ryūichi Amano Kuki Ryūichi Ryūichi Tamura Ryuichi Nishizawa Ryūichi Yamashiro