I know it's a long long shot but I guess it can make sense .... at least I hope
Oda is a master of foreshadow and twist , so let's see if he was able to fool us or not
I want to talk about the man behind Yonko sage
the man who made Whitebeard , Kaido and Big mom big shots
and maybe was involve with Shanks and Teach
the man who made the Yonko without knowing
step one , let's clear some facts about Kaido war :
1- Kaido want a war ... some thing before he wanted to do before the Luffy come back
2- Kaido is sure his war is able to end the world
3- Kaido BEEN on God VALLEY ... you know , the war between Rock , Shiki , Kaido , Big mom , Prime Beard Vs Roger , Garp , maybe Dark King , maybe Sengoku and many other legends
and unlike Marine Ford is safe to assume all of those people went all out in that war
so ... Kaido BEEN ON THAT WAR .... and he was thinking his crew alone can start the biggest war this world has ever seen?
Kaido is not stupid, he know as a fact his crew is not even strongest among Yonko , that's why his dream was about create one
but even calming
he can top god valley is beyond stupid ... keep in mind he didn't even had big mom back then ....
Step 2 , Let's see what Oda had to say about Wano
many people assumed this is about Imu ... and while in make sense that it be ....
this claim being about Imu have 2 major problem
1- Imu is not really as we know of , Legends are well known people with great achievements while as far as we can guess Imu is not active for 100s of years
2- Imu is not connected to Whitebeard as we know of
so the GREATEST ENEMY STRAW HATS WOULD FACE YET can be Imu and
1- Imu could be a legend in good old days
2- Imu could be connected to Whitebeard (the same Whitebeard who didn't even knew what is D until he was 50 years old)
we can at least agree this claim can be about Rock.D.Xebec
1- he is a lurking legend in one piece for sure
2- he was more than connected to Whitebeard
but wait there is more
surprising you said ...
Step 3 : Shanks meeting Gorosei
as much as people enjoy joking about this massive hype moment for plot ... we should be able to agree on some points
1- Shanks was there to warn the world about some thing great
2- Shanks was willing to go there in worst time possible ... as Gorosei said themselves
3- Shanks was going there in the same chapter Rock was introduce to the story
as much as people like to say here was there for Luffy and Teach ... it make no sense what so ever for Oda to do that
Luffy and Teach were on Imu personal target list, he would never agree to leave them alone ... nor he need some one to tell him they are danger ... the entire world know they are big and massive danger
would Oda show us Shanks going there just for a pointless cause ...
the last time Shanks bothered himself to go to meet another world power ... it was because he could foresee the Marine Ford war before everyone else
he knew who Ace really is ...
he knew Teach personality ...
and he predicted the war ...
so I'm willing to be the danger Shanks was willing to bother himself that much MUST BE GREATER WAR THAN MARINE FORD ...
Step Four : Big Mom joining Kaido
some people didn't care about details ... but there are some funny things going on in Wano
Big Mom joining Kaido seemed far too random ...
sure he is Kaido , sure he is big mom ... they have a history and both have blood lost but
- Kaido was willing to go in war with Big Mom
- Kaido wanted Big Mom dead
- Big Mom wanted Straw Hats and Straw Hats alone
- they fight
and then ....
- they both want to take over the world with joy while they seem sure about winning?
wait what
- why Big Mom joined force with Kaido for taking over the world?
- we are talking about same big mom who was carefully leading her lands for 20 years and never started a war?
- why did they stop fighting?
- why did Big Mom wanted to join Kaido side and share his goal all the sudden ...
....
as I said ... there can be answers to everything that I asked ... but it only take one answer to clear every single one of this questions
Rocks is on Wano and he is leading Kaido
1- that's why Kaido is sure he can create biggest war of the world and he can end it cause he have his old master planing everything
2- that's the man Oda was hinting to when he was talking about a lurking legend would be greatest enemy so far to Luffy
3- that's the man who can give us a surprising ending to wano by not letting Kaido and Big Mom lost but change the war
4- that's the man Shanks went to talk about win Gorosei
5- that's the man who stopped Kaido and Big Mom and make them ally, Big Mom knowing Rock is on their side was withdraw the fight , stopped caring to SHP and joined Kaido as an ally
I know it seem like a very very very twisted result for one piece Wano arc ....
but he is the only man who can up the game to titanic level and bring a true climax to Yonko Saga ...
and by true climax I'm talking about a fight among all four Yonko and Marine to stop The New Rock ...
I can easily see Teach and Shanks joining the war soon
in this way at the end of Wano ... the Wano land would be free from Kaido ... but both Kaido and Big Mom can be saved for the end game ....
can this be a reality?
p.s
and maybe this can ... improve the possibility ...
again ...
it can means Kaido as well ... as Kaido rule and Orochi is just a tool ...
but knowing "everybody know Kaido is ruler of Wano" this might be a hint