At first, Axel was expressionless. His position, with his hands and feet tied, looked like a criminal about to be publicly executed. More like publicly humiliated.
Axel's indifferent eyes twitched. This water… something is wrong with it.
"Hahahahahah, did you notice?" the boy asked with a smirk. He turned to the instructor.
"I was able to learn a new method to control my ability. Earlier, that waterfall was at -2°C. I haven't learned the technique to lower the water's temperature, but I can control how hot the water can be. Currently, the water is at 40°C."
The boy proudly showed off the temperature reading on his holographic screen. Within a few seconds, it had reached 50°C. Then 60°C.
As the temperature kept rising, Axel thrashed around. His throat was almost ripped as he screamed. The other students looked at him with uncomfortable gazes.
The instructor patted the boy's shoulder, "That's enough, you will burn his skin."