It's Showtime

Since the participating students were already brief about the rules of the competition, they no longer hesitate to gulp down the entire content of the flask. Looking at their internal state, the students feel nothing strange Everything was as it is, nothing happens. The only difference is that they can somehow feel that something is restraining them from gathering their mana. Even if they attempt to cast a spell right now, even the most elementary one, they won't succeed. Because they won't be able to exert enough mana to power it up.

The students were asked to gather with their group. Then each group will be asked to enter the room prepared prior for the examination one after another.  Most likely there is something like a teleportation portal in that room that will teleport them to some other place. As expected, each group was randomly sent inside a monitored battle arena. The group were sent in a wilderness setting and no one knows where the other group