They heal on their own, hence his nonchalant reaction. Healing factor can also play its game and done.
Only the Espers, but not the guide. He is spreading germs
Doesn't matter they heal fast. Can at least bandage it up. Or change clothes.
Healing factor was mentioned in the earlier chapters.
Regarding the blood, well, that what makes the scene sexy. It also carry subtle meanings such has burden among espers, his condition, etc. It makes the scene more meaningful, considering that this has heavy themes. It's about interpretation and analysis.
They use those meds to speed things up, I know (￣∇￣") Still, he can clean up himself before doing other stuff. He already showed the meanings of burden. No need to keep showing it (≧∀≦)
Don't have that kind of fetish, to seeing bloody wounds as sexy (⊙…⊙ ) (=・ω・=)
Yeah, I guess it's just a matter of preferences.
For someone properly trained in medical care, you sure don't look like it. With all those bloody wounds! You're not very convincing (￣∇￣")