This will open a character's Kafra storage window on the client connected to the
invoking character. It does not check wherever it is run from, so you can allow
any feasible NPC to open a kafra storage. (It's not certain whether this works
in item scripts, but if it does, it could be interesting.)

The storage window might not open if a message box or a trade deal is present on
screen already, so you should at least make sure the message box is closed
before you open storage.

mes "I will now open your stash for you";
close2;
openstorage;
end;