User blog comment:Saruhikofushimis/Character Categorization/@comment-5785681-20190527000323/@comment-27002267-20190527083338

I see, that makes sense. Your reasoning is logical and fair, however, I think every character in the series has an impact on a main character's development, just some more so than others. For me, I go on the basis of how large of a role they played in the overall stoyline of the series. Russell and Lori definitely played an invaluable role towards Rin's development, however, their overall impact on the storyline was minimal, hence I would still consider them minor characters. This is the same for the new ISC members; they are important for Rei and Nagisa's development, but in the storyline as a whole, I would say their role is minimal. Even though they were introduced in DttF, they received less screen time than other new characters like Ryuji and Mikhail, who played an active role in supporting the development of the two main characters and were actively pushing the plot forward. This also applies to Ran and Ren in the way that they do not have a major impact on the series.

Isuzu is a contentious one, her role in DttF as the third Mikoshiba sibling and as the captain of the Taka U Swim Team was fairly major, but in the series as a whole, it could go either way. As you said, her role is fairly dispensable as of now, so she might be considered Minor for the moment.

— Yuji Otsutsuki  08:33, May 27, 2019 (UTC)