The LV 10 wing demon blew the black object into pieces from 10 m away. However, the object just broke apart like a rock without any phosphorous flame...
Of course, a high-power white phosphorous gel bomb would burn up even if it was broken.
Actually, it was not the real high-power white phosphorous gel bomb; but a common piece of stone, which attracted the attention of all the spider demons and the wing demon.
When the stone broke apart in the air, a LV 8 spider demon being closest to this human fighter burned up as it uttered a shrill miserable shriek like wild beast's whine.
The human fighter successfully made a feint to the east but attacked in the west. He solved a LV 8 spider demon who was closest to him.
