Complex sentence: There are relatively few schools of the Ryuei Ryu outside of Japan, currently only two groups teach Ryuei Ryu in North America and one in the Okinawa Ryuei Ryu Karate Kobudo Ryuhokai, led by Tomohiro Arashiro of San Diego, California.
Split into simpler sentences: There are relatively few schools of the Ryuei Ryu outside of Japan, currently only two groups teach Ryuei Ryu in North America. One is the Okinawa Ryuei Ryu Karate Kobudo Ryuhokai, led by Tomohiro Arashiro of San Diego, California.