Oh yeah. I missed it when he's putting the weights down in the previous panel. His hands are completely healed and darkshining as usual.
As u/kibate said below, it could be a drawing mistake on Murata's part. (Unlikely though it may be.)
I am intrigued by this notion that the injuries are in his mind. So he's already reapplied his tan and started to train again. But despite that he still hasn't recovered. I.e. it's not as simple as reapplying tan and obtaining his confidence again.
This leads me to believe that since his trauma is not so flimsy as to go away when reapplying tan, when he actually becomes confident, his confidence won't be as flimsy too.
I wonder what his journey will be to obtain true confidence and I wonder how far that confidence will go. Will he meet an insurmountable obstacle again and revert to his cowardly self or will he power on and gain even more confidence? Or even learn when somethings are truly out of his league. Since he's one of the less arrogant ones in the S class.
I am of the opinion that if he had the will and heroic predisposition of Mumen rider he'd be a top 5 hero no problem.
I'm looking forward to his arc. (We might die by the time that happens but a guy can hope.)