Now they will practice calling him morinaga
That's a huge mistake in translation I don't even know why you would do that unless you're just completely against using the word "senpai"
Yes, a very huge mistake. It change the entire power dynamics, ignoring the culture. But I guess the translator at the time did not think of it has important, never imagining that the story was not a one off.
I wanted to own this series and could not get my hands on reasonable price version in English, so I got the story in french. A bit stuck now, not going to change just for the last few volumes.
In the official French translation, Morinaga already calls him Souichi (and I hate that). I wonder how they are going to deal with this chapter.