Guild Wars 2

Ok, so i got my Charr to 80 and through the personal story.

Then my reward is a soulbound box of lvl 18 armor?

Why not accountbound? Then i can put it in bank, and use it on my next character.
This makes no sence to me!

Open it. What you get is Account bound.

Still doesn’t make sence for the box to be soulbound though.
I have to fight go to 1 character, to pick armor for another character?
What if i don’t have a next character yet?

I have no idea what you mean.

The mentor kit is rewarded to the character who beat the elder dragon, therefore it is soul bounded, and he is the only one able to open the kit.

But as Novuake said, the gears that rewarded after you opened the kit will be an account bound gear at lv18, which encourage you to make an alt and be able to use the gear upon hitting lv18.

The logic sounds quite legit to me. It is a tease for you to make alt, if you don’t or not intended to make alt, it is a garbage and you can help yourself by pressing destroy.