This post is a little big, so take your time^^ And it might be a better idea to read through the whole post before coming up with a reply as I jump some back and forth in this one
First of all, I would like to start out with something less... good. The "bad" news (don't worry, it's not a killer, far from it actually

).
One thing that I didn't quite get:
"
Narrator: Less than a half an hour later, the two chuunin rendezvous each in the possession of a backpack at the pier where the boat awaited them. The boat operator greeted the pair, started the motor and they propelled onto Mizu no Kuni."
At this point, I was thinking; "
I know that the direction they are taking is stated in the scroll Tsunade gave them and that they need to look for the gems in different villages, but as far as I know there isn't any pier around Konoha, yet along water. I'm little confused on the direction they were going, but I guess that's either unintentional or you're just keeping it secret for later in the chapter/FF."
Then I realized that you later stated where they were going so it wasn't a big deal.
On seconds thoughts, "Mizu no Kuni" caught my attention, so I searched for it on google to check what it meant/where that is, and found out it's the Land of Water which "house" kirigakure among other things... I don't think everyone know that that's what it is, so you might want to add "Land of Water" in "()" the first time you mentioned it; even though you eventually reveals where they are going later in the chapter.
Just a hint^^
This is the part where it gets interesting in a confusing way...
They took a boat and headed to one of the five isles of the Land of Water...
My first thought was; "
so I guess the two of them rendezvoused at the east gate of Konoha and walked to the wave country, after crossing the great Naruto bridge, and then took a boat from there?"
That's the only explainable and realistic reason, but for me it seems to be an unintentional gap there + it feels a little weird it took only a half an hour to get there... You could perhaps have added something in between here to make the chapter a little longer and a little more connected? Like that it took a half an hour for them to rendezvous at the east gate of Konoha, before setting off for the land of Waves. Half a day later they arrived at the pier in the Wave Country, where a boat was waiting for them[...] That would make it more realistic

I see now that Escorp already addressed this matter, but I'll leave it as a hint that everyone can take from, even me^^
Though there seems to be something missing here. I think it's a minor flaw that you may not have thought much of. It's not that important, but I thought I was going to be picky about it, as I've also written about traveling from Konoha to kiri in my FF, and because of that I made a lot of research for it. First of a side-note. I find it funny that it took about half an hour to get to the Wave country in your FF, while it took half a day in my FFxd
For the main point... They took a boat and after almost reaching the Mist village or the shore of the Isle where Kiri resides, they saw The Great Naruto bridge?
This is were it comes problematic so to say
The Great Naruto Bridge is what connects The land of Fire to the Wave Country, so they should have already passed it before taking a boat. If you remember from the manga, they had to build a bridge to connect the wave country to the fire nation, and because it wasn't build yet, Naruto and Co. had to take a boat over there.
So unless they never came to the Wave country and took a boat before reaching the bridge, which would be at the end of the Fire country, meaning they would long time have passed the bridge before getting to Kiri, then it doesn't add up. It doesn't really add up with them closing in on Kiri if you get what I'm saying... Not trying to be critical or harsh, but this is a bit confusing, and fact is fact, even if it's geometrical

Not that, that many might care about it and like I said, it doesn't really matter that much, however if you're going to make it right, then that's where it goes wrong so to say.
I have a feeling you think this post will be all about criticism, but I left the good parts for last
I love the way you portrait Kotetsu and Izumoxd It's humorous, but at the same time quite accurate. And the way Izumo is in respect for Tsunade... It's almost like he's afraid of her, but at the same time he cares much for her, while Kotetsu is almost like a mix between Naruto and Kiba when talking to herxd Well done getting those attributes displayed ^^
I like how Izumo is like the leader type of character while Kotetsu is like the laid back-carefree one
I think this turned out greater than I expected, judging from you telling me that you were making a new FF based on these two. I must admit I had some skepticism at first, but oh boy did you deliver! The plot you've come up with couldn't have been more suited for your writing skills and style, and I'm pretty intrigued to see how this all will go down. I have a feeling we have a long FF ahead of us and this FF shows much promise! This might become your best FF yet, and I'm really excited to see what you have in store for us.
So without further ado, I'll just jump straight to chapter two
Edit: Damn... I think I even beat Escorp in length with this post, how about that?!
