Hello , i was thinking that when the final blow is dealt to a villain it always has WORLD level and STORY level resonance wich makes for a much more satisfing ending for a villain.
So when Zoro will behead Kaido with Enma ( the sword that cuts to the bottom of hell) he uses a Fire Cutting Attack that flies down the hole made by Luffy and cuts the gigantic magma pool (bottom of Hell stated by Luffy) causing an explosion that would bring Wano to sea level , here a drawing on paint to visualize my point
So when Zoro will behead Kaido with Enma ( the sword that cuts to the bottom of hell) he uses a Fire Cutting Attack that flies down the hole made by Luffy and cuts the gigantic magma pool (bottom of Hell stated by Luffy) causing an explosion that would bring Wano to sea level , here a drawing on paint to visualize my point





