Thanks. I also asked around my friend group, and they have said similar things. There's not a lot you can do concerning color reproduction across devices, they sometimes even edit two versions, one for PC/storage, one for phone/social media. Other than that, it's a lost cause.
So I guess the problem now boils down to color consistency in the same device across programs. Particularly on PC. I know that having a calibrated monitor is one major step, but what settings to tick and color space conversions in various programs are what's bothering me. Like, one photo imported from my phone can look desaturated in one program, over saturated in the other, and have a different blue tone in a third. Which version should I edit in? I'm only sticking to shooting in sRGB mode on my camera now to minimize headaches, but just wondering what else I could do.

Haven't watched, but I'm surprised this is made into an anime. I read the manga years ago, it's a pretty dark (maybe a bit dry) story.