Pfft, I would've cracked in the same way. This is pretty much how I react whenever I see pacifist japanese mcs in other worlds where their lives are threatened and they still refuse to kill people or take drastic measures so the f*ckheads just come back all the time or keep on causing disasters.
Also, most japanese mcs are afraid of their future father in laws(because, there's no way whatsoever that this mc isn't going to get a harem and that the bunny girl isn't a part of it, that was clear from the start and the tags), but this guy trains his ass and turns him into an obedient psycho subordinate.