Seisan Matsumura kata Shorin ryu Higa Kōyū sensei セーサン 「松村」型 小林流 比嘉康雄 先生 

Kata: Asai ryu Hangetsu, Different breathing method #2-2: Seisan kata by Shorinji ryu, Shorin ryu and Shito ryu
浅井空手:浅井流の半月・呼吸法の違いを説明その弐の二・少林寺流、小林流と糸東流によるセイサンの形
I shared two videos of Sanchin 三戦 kata yesterday, that are the forefather kata of Seisan/Seishan セイサン/セイシャン (Shotokan Hangetsu 松濤館・半月). The intention was to show how Ibuki breathing was incorporated in that kata.
We need to see how this breathing method was inherited when it was adopted by Shurite 首里手 styles.
This is Seisan kata by Shorin ryu 小林流.
If you are interested in the full explanation of this post, look up the first one, Seisan kata by Shorinji ryu.