Gyokushin Ryu (Heart school)
or Spherical Spirit
Ninjutsu
This is real Iga mountian Ninja stuff - espionage, disguise, invisibility
There was not much focus on fighting style here as the onus is on evasion rather than combat - however in grappling this ryu uses sutemi sacrifice throws to take the enemy down so they can be finished on the ground, below sight lines - this would be used in defence if discovered, and in infiltration to take out a sentry
In a fight you keep your distance and draw the opponent in were he can be dealt with - like the double retreat before shoot, clinch and td
Attack By Drawing
It is summarised that Gyokushin is entirely based on Gyokko Ryu, therefore the Kihon Happo, just a different tactical approach.
There is also a suggestion that, as Takamatsu Sensei was at Kano council for Jujutsu instructors, that the sutemi waza sacrifice techniques of Judo come from Gyokushin.
There is also a modification of the KH in this ryu that allows for powerful bone breaking, meaning this school adresses koppo jutsu as well as jutaijutsu in combat, similar to the koppojutsu of Gikan ryu
This ryu also uses flexible weapons such as kusurifundo chain, and the lasoo, so includes hojojutsu
This ryu was based on Gyokko Ryu and practiced as such for ten generations until is was inherited by the Toda clan. As the Taijutsu for their existing Ninja school, Togakure was based on Gyokko and Koto, it would be after this time that adaptions to Gyokushin would have happened.
Taijutsu - the addition and specialisation of sutemi sacrifice throws to the koppojutsu and jutaijutsu
Weapons - kenjutsu and iaijutsu, with additional specialisation in kusurifundo chains and nagenawa ropes and lassoos
Espionage and spying were the speciality of this ryu
GYOKUSHIN Ryu
Spherical Spirt Heart School
Ninja Spy school