This form is a product of Shimabuku’s own research into the art of kobudō, the coverall for Okinawa’s weapons studies.
The kata was built as an introduction to Sai practice, with the weapon movements replacing the empty-hand applications.
The form is taught one of two ways: with or without kicks. Initially, the kata was taught with kicks as it is a karate-based kata. Later, after 1960, the kicks were removed because Shimabuku wished to emphasize the weapon more so.