He stops what's he doing completely as he examines his condition closely. Of course, there isn't anything he could do to help, considering he isn't a doctor or a healer in a sense.

"Oh, Yoite..." Part of him wishes he told him sooner, but he was blind and couldn't see.

"I'm glad the train helps, but...I'm glad you told me. Now I feel better, I could help you whenever I can. You just need to let me know." If anything, he wanted to help with his burden.