
TN: All the way since Chapter 1 to Chapter 3 (whatever Alba and Shion are doing right now), Ross has always called Alba “Hero-san”, although we’ve dropped the honorific in our translations since it sounded smoother without. It’s interesting to note though, that in this update Alba calls him “Soldier-san” at first (we also dropped the honorific), but after Ross snarks about it a bit, Alba just says “Soldier”, the same way we’re familiar with in Chapter 1. If you know a bit about the connotations of dropping honorifics, the sense of distance between them is pretty significant.
…tl;dr, Ross always says “Hero-san” even after he and Alba have become friends, and Alba called Ross “Soldier-san” at first, then just “Soldier” (and of course now only uses Ross/Shion’s name).