Well, they are heading back to mainland Wano and I have a big feeling someone is going to connect Zoro to the Shimotsuki soon, so there's that.
That being said, Enma is the perfect opportunity to turn a blade black and still do it. Its not like he needs to replicate it with Shusui. They are made by the same bladesmith.
That being said, Enma is the perfect opportunity to turn a blade black and still do it. Its not like he needs to replicate it with Shusui. They are made by the same bladesmith.
Zoro doing it to Kaido above the Flower Capital though? EVERYONE there will understand it. Onimaru even specified that Ryuma killed a dragon above the Flower Capital when they first met.