he does get one, but he gets the girl that has what could be considered a birth defect, she is nearsighted to the point she can't see her own feet. and no healer has been able to fix her because nearsighted isn't really an illness. so he circumvents that by buying her a perception up skill to counter-balance.
There is a chance that his new title might be Dragon-slayer or Dragon seducer given that in Isekai that dragons that change their shape are usually female ?