Well, he's not completely ineffective - in fact, this time he scores a direct hit, perhaps because the angel is assuming that he'll actually be sensible (as most demons are when given that ultimatum). It shrieks in a voice like an unholy batch of grass whistles all sounding at once and drops a few feet in the air as it attempts to beat the flames out with its wings.

Watch out now, Hajime, it's going to be pissed as soon as it gets that fire out.