This kata came directly from Taira, and was modified by either Shimabuku or
Taira. This kata is called Urasoe no Kon in Taira's syllabus, and can be found
in Inoue's series. Urasoe is the standard Japanese pronunciation of the name
whereas Urashi is the old Okinawan pronunciation. According to Nakamoto (1983)
Taira supposedly learned this kata from Mabuni Kenwa (1889-1952), founder of
Shitoryu, which went on to become one of the "big four" styles of modern
Japanese karate do. Mabuni gained most of his influence from the likes of Itosu
Anko (1831-1916), Higaonna Kanryo (1852-1915), Aragaki Seisho (1840-1920), etc.
By sheer coincidence, Mabuni's karate, like that of Shimabuku, is a unique blend
of the various kata traditions that were formerly practiced in and around the
three main "karate areas" i.e. the Shuri, Tomari, and Naha districts.
Kobudo of Shimabuku Tatsuo by Joe Swift, 1998