I think Zoro is gonna beat King by using an infused CoC attack with Kinemon's fire slashing technique.
King's secret seems to be tied with his special fire. Just look at him after the shishi sonson. Dude has a flame path on top of where the slash should be, and Zoro said last chapter that he didn't see "blood" coming out of King, despite slashing him multiple times.
Really you use library of author as proof ?. Beside manga never stated this goseri supposed to have this sword.
‘He it is supposed to be same because it just guess work rather than manga facts. None chapter 97 gorsei have this type of sword. It is not even stated it as fact
"King can outlast Katakuri " goodluck
Katakuri with awakening (drains stamina) and fs(drains stamina) while loding blood for 3hr still didn't weaken his haki but King who's gonna lose in 15 min can outlast him lol
Z: I lost to Kuina again! I haven't trained enough!
Z: eh!? I don't have any money!
K: These are blunt anyways. Now these things are the only things I can make... Use them to practice or whatever.
K: A good sword is a "human carving knife". They are created for the purpose of killing. Blacksmiths create them to take as many lives as possible!!
K: Even swords have personalities. Those who can make the swords submit are swordsmen!
K: Dangerous swords are cursed? What a load of crock, they are meito! The cursed swords feared by the weak have had the honour of a name bestowed upon them! If a sword is fearsome, it means that it is faithfully serving its purpose as a lethal weapon!
K: When I was young, that thing that I made was my life's greatest accomplishment... it was very serious in temperament, so much so that it would give you the chills just to hold it. So I gave that meito the name of the Great King of the Underworld!!!
You do see that the fights in this arc are ending within hours right? Why do you think so?
Also why do you think every strawhat has been getting pu's which buff their AP? Luffy and Zoro with AdCoC. Robin with Demonio. Jinbe with a new Ougi technique. Franky's Radical Beam was already really powerful and conveniently Sasaki had a weakspot.
That's the only way to put these Endurance monsters out for good. They'd just outlast you otherwise in a drawn out battle of attrition.