The only reason he didn't bother to dodge is that he assumed (incorrectly) that he had nothing to worry about. Fire is his natural ally and he is immune to its effects, thanks to Helios' protection. At least he should be. But this is no ordinary fire.

"Shit!" Oh dear, Forty's vocabulary choices seem to be rubbing off on the good officer as he scrambles to get away from the raining felfire. He's quick--not quicker than rogue's she's dealt with but certainly faster than any suit and tie civilian has any right to be. And he aims to get close. Melee range close.

Katsuya would rather not shoot Forty but that sadly leaves him few options in terms of how he fights.Best to use his strength to his advantage.