A dense particle field in the manner of yuruyurau's #つぶやきProcessing — the May 7, 2026 wing. Math: a = (x,y,d=mag(k=4*cos(x/21),e=y/8-20)) => circle((q=3*sin(k*2)+0.3/k+sin(y/19)*k*(9+2*sin(e*14-d*3+t*2)))+50*cos(c=d-t)+200, q*sin(c)+d*39-475, k*k>15?2:1). After yuruyurau (https://x.com/yuruyurau/status/2053149494439800895).