Sad customer looking for help

TL:DR: Are Boruto, Sarada, and THE LAST Kakashi really impossible to get now?

Hey everyone,

I recently got back into the Naruto series. I chose a pretty good time too because I was at GameStop one day to pick up a controller and it just so happened to be the day NUNS4 released. I had no knowledge this installment to the series would even release so you can imagine the excitement I felt. I went ahead and bought it because I finished reading the manga and closed the series off with the movies.

Anyway, I was enjoying the game until I ran into Boruto online. I didn't immediately care because I figured I'd get him when the DLC drops but I just found out he's exclusive to pre-orders and will never be DLC. Is this true?

Is there absolutely no way to get him and Sarada? I'm also understanding Hokage Kakashi is impossible to get too. Is there a place when I can maybe buy a pre-order key?

In the grand scheme of things it's not the biggest deal but had I known the game was releasing and had I known these characters were exclusive then I definitely would have pre-ordered. Whatever the answer is, I just want to know so I can move on with my life.

Thanks for the help