He won't lift the shirt, given the fact that Noctis did not react well to him seeing the scars, but instead he lays his hands on Noctis' back with surprising gentleness given his size. His palms are warm, and he doesn't press down into the scars, instead just letting the heat soak in. Seeing what the reaction will be. Sometimes, when he's absolutely at his sorest, his father had taught him how to work out cramps and aches from his muscles while still in the training room. This would end up being... a slightly modified version of that, but he wants to help in return.

No one should go to school hurting. That would just be one giant pile of suck for the whole day.