Zoro’s swords are black when using hardening
He doesn’t need to use hardening to use srma

It’s about to be 2025 and people still arguing against hardening being visible
He doesn’t need to use hardening to use srma

It’s about to be 2025 and people still arguing against hardening being visible
Even Zolo didn't use hardening while using advance invisible barrier CoA in fishman island.
Sentomaru still doesn't use hardening while using advance invisible barrier CoA.
Scabbards uses advance invisible CoA to cut Kaido as well, and its not hardening.
Hyogoro used advance CoA and his sword is not black hardening as well.

