The impact was not just heard—it was felt by this dimension itself.
The moment Almond's cross-slash collided with the towering spiral maw of the Grand Sovereign Thanacrypt, the entire battlefield convulsed as if the space forcefully bent. A concussive ripple of anti-light pulsed through the crater, forming a shockwave that peeled away gravity, and flung stones and debris skyward before they disintegrated completely from the spatial pressure.
The debuff he had applied on the boss using his Geneline ability — Dreadspire Animus Grimveil, was the one Lily had suggested for maximum damage output since she had experimented and knew that absurd debuffs wouldn't apply on the boss, like Damage Amplification x 100, or Armor Ignored, as Grimworld prevented such debuffs from non-will beings for the boss.
People with the will had a chance to lower the potency of those debuffs, but the floor bosses here didn't, so the system prevented such broken powers of powerhouses from getting applied.