The reality of the situation was indeed as Ethan had described, Charles faced the fourth-level Beast Master in the Trial Tower without summoning a mystical beast.
This time, the injuries he sustained were slightly less severe than before.
When the surrounding white mist cleared, Charles returned to the real Trial Tower.
All of his injuries had vanished, replaced by a sense of mental fatigue.
However, there was still some exciting news, the information prompt in front of him displayed:
[Unknown Combat Skill (1) in mastery, progress 35%]
[Unknown Combat Skill (2) in mastery, progress 20%]
Not only that, but through these several battles, Charles could feel that his practical experience and skills had improved a bit, making him stronger than before!