Gojushiho, the Matsubayashi version is said to be that of Iju. Gojushiho is a complete system of palace hand or udundi and includes the drunken techniques as well(which by the way are used to throw your opponent clean across the floor just before smashing their face in.) An advanced kata which appears to have an overwhelming theme of immobilization followed with striking and finally slamming your opponent on a hard surface or into other people. I assume due to the indoor techniques in this kata it was specifically developed for the royal bodyguard to protect the king in the palace.