@Jimsock1 I'm guessing it's phantom pain, It's a skill that deals no damage hence no pain... I think it's just a common reaction like imagine you got the skill you'd still flinch, block, and/or dodge attacks despite being immune to everything
To sum it up,
Brain: You got hit so.. uh guess I'll send pain your way!
You: But I got a skill with no damage
Brain: Pain!
I mean as soon as hes resurrected he gets punched and takes damage? You can see his cheek is swollen and that other girl is healing him and hes complaining about pain.
Atleast stick by the rules you set out for yourself author
jeez