No. Easiest way to prove: look at chapter 65, "old" Dojin doesn't have a ring but the "last" Dojin do when he grows old.
Ok, ok slow down I didn't understand the second question BUT THANK GOD someone else noticed the dojin that died wasn't "our dojin" but the other version of him. If you READ CLOSELY it say 4 years later so there is no way for him to become old. So he might of not really waited for deatg . Thank you for not letting me be the only one that knows!!
??? I don't recall. Though even if he did it wasn't a lot of time that passed. And if it was the "old dojin" then of course he has waited a long while
SPOILERS
So I'm a little confused towards the ending chapters. Was the old Dojin we see in the last chapter with his niece the 26th Version of Dojin? And not the last (our) Dojin we were following throughout?
Then "our" Dojin didn't die of old age in order to reunite with Yellow Dragon right?
So does this mean that every time Yellow Dragon reverses time there's a different dimension that branches off? Cause how was the old Dojin and last Dojin able to meet in person at the same time in order to exchange the pearl? Because each version of Dojin has different events that follow every time, so like the future (or past-future) changes for every Dojin is different.