Their respective tolerance probably, in the end, came from how they were brought up. That wasn't to say he can't see Kija having never imbibed before, but Jae-Ha's life prior to joining up with everyone included far more alcohol (at least when it was accessible to begin with). It was only expected with the life of a pirate, after all, right? So of course he had built up being able to handle his own. Throughout their time at the bar Jae-Ha had watched Kija with equal parts amusement and making sure he wouldn't over do anything.
"Oh?" He glanced to him as they continued to walk. He could hear as the start of a fireworks show began elsewhere. "And what kind of game were you possibly thinking of?" The corners of his mouth curled upward. Kija was going to suggest something ridiculous, wasn't he.