Comment by RPGsus on Boukensha Ni Naritai To Miyako Ni Deteitta Musume Ga S Rank Ni Natteta - Vol.1 Chapter 13

I mean, that would mean that the thing he lost his leg to was a demon lord, and he lived, despite only being in business for 3 years. But that means he was an E-rank for 3 years, unless adventurers start at an even lower letter rank.