From MC's perspective:
When I got close to him. I cast another magic spell.
"Gravity Domain"
The fat middle-aged man was grinning. But he felt heart palpitations all of a sudden. The next second, the surroundings went dark.
He was inside the gravity domain. Inside the gravity domain, the power of the gravitational force increases as time passes.
On top of it, it's a 3rd stage magic spell. Which is already powerful, to begin with. The fat middle-aged man again felt the pressure of the heavy mountain. But it was manyfold compared to before.
"Who are you?" A hint of apprehension appeared in his eye. He thought that the opponent was an ordinary wizard with some tricks.
But all of a sudden he felt he was going to die here.
On the other hand, my mana is consuming at a faster rate. If it were level-6 Wizard and below, the opponent would have already died. But he seems to be a veteran in the level-7 stage.