A Determined Prince
The alchemy hall was in a separate large building that was built for everything related to alchemy and was even a center of trade for alchemy-related products.
But before entering the hall, all the participants were required to take the written examination so that most would be eliminated in this round and only the knowledgeable ones would be remaining.
Damien and Valentina weren't taking the exam directly. So, they sat somewhere near the building where there weren't many people and even if there were, they wouldn't pay attention to a boy resting his head on a girl.
It would look like a couple was resting. Since Damien needed to control Tristen's body personally to take the exam, he couldn't risk sitting with the audience. He needed a quiet environment with no eyes watching him or anyone to disturb him.