60 chapters of Wano specfically focused on the past of Wano and the residents of Wano and Zoro even gets a tie to Wano through Wado Ichimonji and then now the war begins BUT you want the story to take ANOTHER break to go back into some random character's past
Multiple people whoknew Ushimaru have looked directly at Zoro and none of then saw a resemblance. Zoro himself has heard the name Shimotsuki mentioned a number of times and he hasn't even reacted to it big the name of his home town. Zoro literally met the person who made Sandai Kitetsu and he was like "Oh okay. Neat"
I think we are done here. Theres nothing there. The story doesn't care. Zoro doesnt care. So we shouldn't care. Theres nothing there
Not another break, just information along the way and his visit to Ryuma's grave is scheduled after everything else is finished, afaik so there is time to explain his ties to Ushimaru if he has them. Conveniently he has formed a relationship with the very fox who was a companion of the guy who looks like the spitting image of Zoro.
I know you dislike the idea but we shouldnt bury our heads into the sand and chant "There is nothing there"...
If he ends up not having any ties with Ushimaru, no biggie. Oda said, afaik, that Zoro's past will be a minor thing and being related to Ushimaru is a minor thing, nothing game-changing.
Oda has been dropping hints if you are actually paying attention without being hell-bent on "Zoro has nothing to do with it".
When Onimaru tells him about Ryuma, Zoro responds with "That has nothing to do with me..."
When Hiyori wants to give Enma to Zoro, Kappa says that she cant give her father's sword to a man of "unknown origins"...
Oda has done a lot of background work between Zoro and Wano, we will see where it all ends up.