He had the blood of a barbarian flowing through his veins. It was said that the barbarians possessed great physical ability, but he couldn't even break these chains around his limbs.
Daaaaamn!!!
While they weren't here, he needed to remove these shackles.
"AAAARGH!!"
His mind blanked out, and he lost his consciousness. He couldn't do anything at all.
"This young man is stubborn... I don't understand why he is still resisting..."
"I'm too tired. This tube sucked out all of my energy. I'm going to rest; maybe it's better if I don't wake up."
"Why did we offend the Bentley family...?"
"For personal reasons, I guess..."
"At least this will end tomorrow..."
"Yeah, I'm finally going to die. Nothing good happened in this life."
"That's just how life is."
The other people talked before they fell asleep because the tube just sucked out their energy. They need some time to recover it, and after they recover a little bit of their mana, the tube will start sucking it out once again.