Shisochin

Shisōchin is written with the kanji characters 四向戦 which literally translates as "four directions fight". The kata integrates powerful linear attacks (shotei zuki) and circular movements and blocks, while also being highly symmetrical. The opening features nukite, or knife hand thrusts, rather than the sanchin-style closed fist found in Sanseru, Seisan and Suparinpei. It is the first kata to contain nukite, and the first not to feature shikodachi. The reference to Shisochin in Wikipedia is uncertain at best, but another blog speculates that "there is a written record of Seisho Aragaki performing a kata named "chisaukin" at a demonstration in 1867. Seisho Aragaki was, of course, Kanryo Higaonna’s first teacher."