Next chapter:
Issak: RENZOOOOO! YOU JUST WANT TO KNOW HOW TO MAKE THE GUNS, RIGHT? WHY DON'T WE JUST TRADE THE INSCRIPTIONS?
Lorenzo: ... OKAAAAY!
*the deal is made*
Issak: I got the guns! Mission accomplished, I'm outta here!
Heinrich: Hey, wait a second. If you're leaving, and you even told them how to make the guns, what are we going to do?
Issak: Oh, yeah, I guess you're right. I'll give you a translated copy of the inscriptions, too.
Heinrich: Sweet!
*LATER*
Shihori: Oh, my hero!
Europe: *sound of extremely large volumes of gunfire*
Some samurai: Didn't you say you were going to get revenge for your master, also?
Isaku: Oops, I forgot.