From MC's Perspective:
The Tree Monster appears to be a Class-6 Monster. I ignored it and started moving forward. As Master Austin said, people have already cleared the Peak Stage Monsters, leaving behind High and below Middle-Class Monsters to train.
Just as I was sure that secret land was filled with Tree Monsters.
Buzz!
I hear a loud buzzing sound coming from a distance. I raised my head and saw a 10ft Monster coming towards me.
I'm stunned. The next second, I circulated the lightning power and shot a small purple lightning ball at the monster.
Ka#boom!
The purple lightning ball strikes the Monster. The next second, the Monster explodes into pieces. The blood and body parts were splattered all over the ground.
Looking at the splattered blood. I looked at my palm. A purple arc ran through my right hand. It was a simple method that I had come up with without relying on the actual technique.