Double kill

"Damn it, he's immune to my poison."
Wiping the blood from the corner of his mouth, the Earth Demon Wolf had a gloomy expression. His poison had no effect at all. This was the first time since he started fighting against the enemy. In the past, even when he was facing human masters of a higher level, his poison had some effect to some extent. But the kid in front of him was not affected by the poison at all.
"So, your most proud poison is useless to me. Now, what other tricks do you have?"
Pascal...