oh yes regarding that, since I didn't reread the entire raw chapters and only compare the last, 6th chapter to make sure whether they call each other by their last name or first name in the extra chapter
I took a look at the 5th chapter and it turned out Azusa calls Asahi by his first name which made him to go into feral mode, so thats about it, as for the other time its safe to say that they call each other by their family name generally like the example page I put by the end
No one would have known about this if you didn't say it in the latest update except the ones who knows how to read the raws, so I'm thankful for the honesty. I've been reading mangas and watching animes for a long time now so I know about the importance they give about calling each other by their first name, and the intimacy behind it. So I kinda feel bummed out that the impact of Azusa calling out to Asahi/Unozawa by his first name was missing or sacrificed in favor of complete conversion of Japanese to English, even Japanese naming conventions.
WHAT THE ACTUAL FCK! If they kept the original dialog -- them still calling each other by their last names -- the chapter where Azusa says Asahi's first name during sex would have made way more impact!! And Asahi's strong reaction wouldve made more sense! Oh my god I feel robbed of the experience