From the chūden gata, 中伝型 middle level scroll, this is the first form. The meaning of the technique is to do footwork that is like ("Inlet Waves") waves washing on the shore of a quiet bay.
Drop back receiving to with uke-nagashi, then shift to the left and receive with right uke nagashi. When they kick to the stomach, drop your hips deep and receive under their kick with nagashi and a feeling of lifting them. They will quickly respond with a strike to your face. Receive quickly with jodan uke, then without stopping, shift to the left and apply ura oni kudaki. Using your right ball toe, kick their inside left kaku, then hook the leg around throwing them to the ground with o’soto gake.
Reference
Uke nagashi, receiving carry
O'soto gake, outside hook
Kaku, inside of the knee
▶️ Watch on DTube
▶️ Watch Source (IPFS)