[First, he takes an admittedly strong and perfectly formed roundhouse to the head. Like that wasn't bad enough. Then, the next thing he knows, he's in this completely unfamiliar place that looked a lot more friendly than Japan (or what was left of it), with new clothes and the only things linking him from his current state of mind and the memories he wished he remembered, gone.
If that wasn't enough to piss him off, it would be a godsend.
Of course, he was pissed. And it shows as he wanders around the place, completely confused despite getting some idea of what was going on. Didn't change how confused he was, or the fact that two plus two equaled seventeen right now. Yeah, he's a little slow on the uptake sometimes. But he's an honest guy. Especially when he vents his frustrations in the middle of public like it was nobody's business.
Like right now. At the top of his lungs.] Ugh... What a giant load of crap!