Aiden is afraid
"If Master Kai wanted, he could have ended his fight in the arena in the blink of an eye, but he chose not to." Simon continued, "He did all of that cause he wanted to show that spy who are they against. Just like a mere threat of his existence."
Eiera, Rin, and Aiden were stunned after hearing Simon's words. They were overwhelmed after hearing Kai is against the Dark realm. Only these three were in shock and disbelief, not Luna. Kai already had told Luna about Eclipse Arcana's history and who is after it.
Aiden flinched his eyes in confusion and said, "Wait a minute!" Aiden continued, "You are saying that the fake Monster that Eiera fought was Dark realm people trying to empty out Verdantia."
"Yes!" Simon confirmed.
"Brother is not against Verdantia's Guardian. He is against an entire realm." Rin murmured to Simon.
"Yes!" Simon confirmed and continued, "Actually, Master Kai is in a race against the Dark realm."