Comments of chapter undefined of Immortal Evolution

quick comment, about his EX rank recovery skill i feel like either you should bring down the rank to A~S or fix the part where it said he was scared of getting bones broken because if the bone healed wrong he might get a lame leg(pretty sure that is another way of saying ¨a limp that will never heal¨) i just think that a EX rank skill that is meant to have no drawbacks or limitations like the skills lower then it do should be able to heal all sorts of situations for ex: if his legs were to get steamrolled either his bone fragments should get put back in place to proceed healing or just regrow with no risk of them healing wrong.