No..no, I wouldn't call it pain, he felt a certain kind of discomfort due to how the injection stung him. After she was done injecting him, they applied some other medical stuff to his body that was gonna help with the fast healing of his wounds.
They all assisted each other, and when they were done, Ryder said,
"It's remaining one more thing".
"What is that?". Hugo inquired.
"Though his eyes are closed, he is awake. He needs to go to sleep, he needs to rest for a long time. If he doesn't do so, it would most likely affect him once we start embarking on the journey once again. And I'm not sure who'll be able to do that on his own. I know Everett sleeps for a long time, but I'm not sure he'll be able to do that currently,
So I think we'll have to inject him again, the 'Go to sleep' injection. The one that would make him sleep for a long time so he'll be able to gain back his strength and continue embarking on the journey with us". Ryder explained.