I finished Volume 21, but even before I got to the "Next Volume Preview" page I knew Ko Yong Ha had been mistranslated. No way that dude's 16 by the way. He looks frickin' 26.
Damn, this chapter felt like a mess due to communication issues. And the Korean guy talking down on Shusaku and saying he and Japan are weak. I'm sure that would have pissed off Hikaru.