Board Thread:General Discussion/@comment-27511601-20151231040526/@comment-27524064-20160110034607

If you look at the back of his head where Boros thought he damaged him, it doesn't look like much is going on there, kinda wish this manga was in color because then we would be able to say for sure http://www.mangatown.com/manga/onepunch_man/c035/5.html