muzan was right about to slice through the hashira and the other slayers when his tendrils suddenly got cut off

Muzan: “what the...” he says silently staring at his cut off tendrils looking down at the dust on the ground to the wind

Gyomei sanemi & obanai: all are struck in confusion

Giyuu & mitsuri: “w- what just happened”

Zenitsu inosuke & kanao: all are struck in confusion as well just staring in shock

Muzan: he figures out what's happening and launches an attack at the air