Kakuyoku Nidan kata, by the late Sensei Tetsuhiko Asai.
Sensei Asai spent a fair amount of time in Taiwan studying White Crane Kung Fu, and from his studies he synthesized/”Shotokanized” many of his own katas. This kata was apparently one of his favorites.
Hanshi taught us this kata a few months ago, along with Kakuyoku Shodan. The movements in these katas have interesting characteristics not normally found in other Shotokan kata.
More info about Asai Sensei and his katas here: