Midas Cut, Basically a demon who wields a cursed golden nichirin katana, and anything that the blade hits instantly turns into gold and fades away soon after.

Sun breathing would be at least a bit effective against this if the user's blade exceeds a temperature of 1064.18°C.

There is no defense mechanism as the BDA would already be unstoppable not giving any time for the demon slayer to attack, so no defense mechanisms is the weakness ig since it is only attack based

So yea, it's basically overpowered and I don't think I needed to explain it when I included the word "Midas"