In the shiho nage technique, uke is kept off-balance towards the rear from the start to the end of the movement; at no point is he pulled forwards. This is the teaching given by O Sensei in Budō, with the utmost care and precision.
In Budō, O Sensei provides a particularly precise description of shiho nage, which states that the energy must be developed vertically, and which does not correspond to the way the technique is practised in the method.
‘Concentrate force in the fingertips of the left hand to project the opponent’s right hand upwards towards his shoulder’ - O Sensei (Budō)
Tenchi, kokyu, kaiten, kaeshi, and shiho are technical principles present in every Aikido technique. Every Aikido technique must respect all of them in order for the unique principle of irimi in Aikido to be a reality.
At the moment of attack, it is vital to choose one of the six directions (roppo) and move behind the attackers. Then, apply the first law 一法ヲ應用ス - O Sensei
During the irimi-tenka (入身転化) rotation, tori's arm, which receives uke's reflex energy, must not drop below shoulder level.
