After conjuring the Fire Burst seishin spell, Kraftvoll was able to blow away the tree in which his enemy was hiding.
Unfortunately, the one who tried to ambushed Kraftvoll managed to jump from the tree before the tree fell. This means that Kraftvoll's enemy was not injured in any way.
When the tree fell, Kraftvoll's enemy started chanting a seishin spell to attack Kraftvoll. He chanted, "I command thee, Illuminate thy master's path, thrust thy master's enemy, Light Bolt!"
Since it was already night, white seishin essences were scarce in the surrounding. Since this was the case, the enemy that Kraftvoll encountered almost used his inner seishin to cast this seishin spell.