Thank you for the compliment! Hmm I don't know Precisely but I do know that I'm really methodical about How I look at them? But also I read a lot lol.
There's the empathetic level, where I look at how they talk about and react to certain things and try to make inferences about them using their upbringing. For instance, I drew the conclusion that Keito's bluntness of speech comes from his family allowing him to be quite unrestrained and questioning of their authority, even without this being explicitly stated in the text. I concluded on my own that He's much more friendly after graduating because he's out of an environment wherein he felt compelled to act like an imposing authority figure to maintain the status of the student council. Stuff like that. When I look at how a character acts, I try and trace it to something to form a three dimensional picture of them.

Then there's a more thematic/metatextual level...? Where I look at what the character means to the narrative within the medium it lives in and the trends that the author exhibits. Akira is a big fan of embracing parts of humanity that are often viewed as messy. Which is why Kuro's 'delinquent redemption arc' was fundamentally flawed, because it stemmed from self-hatred. So I see his current writing and I can grasp what the writer intends.

I love. Media analysis. And I like analyzing behaviors... It's interesting to think about why people act the way that they do.