Yup lol I like attaching voices to characters in my head as I read my anime-influenced stuff. It makes it somewhat more engaging and gives it a bit more credibility in terms of how naturally dialogue flows. I'd go as far finding actual Japanese and English voices (gotta get that sub or dub, otherwise it ain't real) for my main characters personalities if I were somehow put together an animation for it lol
Haruka's Japanese voice is Ryuko from Kill La Kill, and her English voice is Mikasa from Attack on Titan. Calm and collected for the most part, expressive enough to have an interesting quality to it in a wide range of emotions, and having a raw aggressive nature to her voice in a rather pissed off scream, and most importantly her voice doesn't sound like she inhaled helium before recording lol
Mugen's Japanese voice is Ishida from A Silent Voice, and his English voice is Soul from Soul Eater. Chilled out vibes, but without sounding tired or trying to sound like jazziest dude on the block. That's about it lol these are expressive too but in terms of voice acting that's not really saying much