I'll copy paste this again ig.
Wanna know the difference between lightspeed and soundspeed?
The difference between Usain Bolt and a snail is 926×.
The difference in speed between an EM wave and a soundwave is 874,030.5×
The difference between Usain Bolt and a snail, is 943.87× less than the difference between an EM wave and a soundwave.
If Sukuna is lightspeed, Sukuna could be in the deepest sleep of his life, and be attacked by a soundwave, and he should be fast enough to wake up and dodge it before it even touches his skin. It touching the hair of his skin would wake him up immediately, and he would proceed to dodge it before it makes contact with his skin.
There is NO UNIVERSE, where a lightspeed character can EVER be hit by a soundspeed attack.
We are only 6,536.4705882353× faster than the slowest thing in our known universe, the Bose-Einstein Condensate.
The difference between an EM wave and a soundwave is 133.7159692225× greater than the difference between Usain Bolt and the slowest thing in the known universe.
"Offguard" means nothing when this level of speed difference exists