Something I love about Idia is the fact that his character has interests outside of like video game and manga. They are all branched out from his special interest, but you can tell Idia likes these things for what they are rather than because they are tied to anime/video games.
Like obviously he’s really into robotics and engineering and generally science, but he also has a bit of an artsy side from canonically being good at drawing (which takes time and practice), to crafting little figures if the Masquerade event says anything. He likes things that takes effort and passion to make from toys to robots.
It’s nice cause characters like him are usually pretty one note. Like everything has to be tied to anime and video games with these weeb characters, but not Idia. He likes board games and art and science and cats and he’s cool and I adore him