Key idea
Connect the same-side collar grip to the sweeping action.
For right , holds right sleeve with the left hand and right collar with the right hand, thumb inside. Tori draws Uke toward Uke’s right front corner and turns in. The right leg sweeps Uke’s right leg upward while the coordinated hands direct the throw. Mirror on the left. Although a leg sweep is visible, the Kodokan classifies Yama-arashi as ; recognize the grip and whole action rather than classifying by one visible limb.