Electrocutes the demon bear with its own blood

He put his right hand on the ground... and wrapped it in lightning. All
of the lightning released by his full power Lightning Field raced down
the liquid coating the ground, and zapped the bear standing on the other
end.

The liquid was of course the bear’s blood. The sea of blood that had
poured out of its stump of a left arm. When Hajime had brandished the
Claw Bear’s arm right in front of it, he had spilled drops of blood
everywhere, and created a small puddle of it around where he stood.