The four people fell under his illusion after the mosquitoes successfully bit them. They fought with Demonic beasts in their hallucinations and fell unconscious out of fear.
Rea's shock was apparent on her face. She was shocked to see these people and was surprised to see them lying unconscious on the floor
She wondered how Crimson knew that there were bad people who sneaked inside her room. If not for Crimson, she would probably be in danger by now.
"....."
'Thanks, Crimson...' she said inwardly. But she was shy to say it out loud. In any case, he was her bodyguard and she paid him for his service. So it was fine not thanking him personally. Honestly, she was shy and her little pride as a princess won't allow her to say it. Regardless, she was grateful that he did so well.
Yman was unaware of her thoughts. He summoned his two spiders to tie the shady people.