Oh, this will be just a species-based freakout, probably. Then he'll get to the "I did WHAT?" freakout later on...nothing like this much mental anguish, right? ;D

Yeah, Hajime tries really hard to be a good guy especially after canon events gave him a boatload of regrets and taught him what heroism really is, so they could definitely have an epic heroes-trying-to-make-it-right time of it!