Toshikazu Kawasaki (川崎敏和, Kawasaki Toshikazu; November 26, 1955 – March 4, 2026) was a Japanese paperfolder and origami theorist who was known for his geometrically innovative models. He was particularly famous for his series of fourfold symmetry "roses", all based on a twisting maneuver that allows the petals to seem to curl out from the center of the flower. Kawasaki also taught mathematics at Sasebo Technical Junior College.
Source: “Toshikazu Kawasaki”, English Wikipedia (CC BY-SA 4.0), excerpt