Making Izuku Worse, But BETTER
*walks in*
*drops post*
*explains nothing*
*leaves*
So, a while ago, I made a post talking about how, among (many, many) other things wrong with how Izuku was developed over the story, that his fundamental character was just... slowly and systematically chipped away by Hori, until his unique personality was gone, and all that was left is a shell of a shonen protagonist.
Well. I'm here today to tell you that... fuck. I can do that shit better than Hori did.
Here's my revolutionary idea: lean into it. See, while he's growing in a bad direction, while as a person he's getting worse in a lot of ways, that isn't bad, as, like, character development, or as part of a story.
So. The thing is, while Izuku changes, it's never really... acknowledged in the story. (This is, of course, a different part of his problem, that while he changes throughout the story, by and by large his improvement, how far he's come, and what he's done, is never acknowledged; in fact, he's actively criticized for not doing everything perfectly, because of course.) Because Izuku is, over all, improving, that means he never gets validation for his work... but, flipping it, with this? He never gets it pointed out that he's doing worse.
And it doesn't even need to be a person, is the thing; you can have it never directly told to Izuku, but shown to us, the viewers, in story, and that's fine, as long as it's acknowledged.
So, the first thing I'd do, to make this whole idea work right is... actually spend more time on Izuku's quirks as a character. He's smart, curious, enthusiastic, mildly obsessed with Quirks, and look! Here he has a Quirk. There's no possible way to work with that, right?
Start there. Show, at the very least, one panel scenes of Izuku... geeking out. Experimenting. Being Izuku, basiclly, and scatter them every once and awhile in the story. Maybe have him suggest something to someone else, show that person's improvement under his guidance (and, you know, have Izuku interact with other human beings... as a human being. Yet another problem Hori has with Izuku; as far as we can tell from what we are shown, he is strangers with his entire damn class, even though the story has tried to push the vibe that he is, in fact, friends with all of them. And don't get me started on his mother, who barely even exists...).
It doesn't have to be big, is the thing, or elaborate, it just has to be there, to help firmly establish these characteristics in our minds as readers. And that's important, because that means it'll be noticeable when it stops.
Ideally, I'd think it'd be best to do this post-Kamino, because it's such a big thing that Izuku having a radical change in response makes sense. All Might's gone, the mantle is his now... no pressure, right? And, in the same way the foundational aspects were set up, it can start small: those few scattered panels? They're gone.
It's not something pointed out or anything, they're just... gone. Maybe replace them with more training, maybe not, but we don't see Izuku spending his free time being Izuku anymore, and that's it. It stays at that new normal for awhile.
Then the stress kicks up a gear; conveniently, after Kamino we have... *sigh*. I can't believe I'm saying this, but conveniently, we have Sir Nighteye. And the thing is? Sir Nighteye is an asshole; he's perfect for just.... bringing the stress up just an extra notch. And here's where more work has to be put in to sell this idea, not just showing less happy Izuku, but showing more upset Izuku, showing how things are getting to him, not just in the moment, but consistently, even when nothing is actually happening to him at that exact point in time. A scene of Izuku... head in his hands, maybe. Training, and pushing farther than he should, and maybe there's something bleeding. Not a lot, not yet, but the cracks should be showing at this point.
For the purposes of this, we'll assume that by and by large the story is happening as usual, so Mirio loses his Quirk, and there's that guilt, hitting Izuku like a truck.
Show those stress scenes just a little more now, work in some conversations with Mirio where he acts happy, but the second he walks away everything crashes down on him; you don't even need to have anyone saying anything, just the visual of his smile vanishing in an instant will carry it.
Because if I'm writing this I'd want her to be a character, show Izuku's mom slowly growing worried as they meet (with her actually being more of a character at all before hand; show her growing happier and less burdened as Izuku improves before all of this, only now they see each other less and less, and every time he seems less happy than he was before, grimmer).
After that, just let things bake for awhile; nothing really changes, Izuku is just more miserable, and people are slowly starting to notice that he's acting different now, even if they don't really understand why...
And then Joint Training. Fun fact: canonly, the Vestiges, as introduced to us? Are assholes; which, honestly, isn't that surprising, because just about everyone is an asshole to Izuku! Stress Factor 5975 that is never really acknowledged in story: some asshole yelling at Izuku for instantly failing at his Quirk because he had no idea how to even use it, much less that it was even there, much less that it would happen in the middle of a fucking training exercise.
And then, important moment here, have someone.... All Might, Ochako, whoever, notice that Izuku is getting a new Quirk (...or developing a new facet of his Quirk, or however that was explained to everyone), but he isn't enthusiastic about it. There's no brainstorming, no experimenting... this thing that should have been a source of joy is just.... there. At worst, it is actively causing him stress. And it this obvious difference that is ringing some warning bells in people's minds.
So, all this time, along with all the story points that are supposed to be happening, from Kamino on I've been slowly weaving together a new one: Izuku increasingly barely holding his shit together in the face of his clusterfuck of a life. Then the War Arc kicks in, and that's where the pay off for all this slow build, because here's where everything goes to shit.
War Arc hits Izuku like a train, and leaves him wrecked in the aftermath, absolutely destroyed... which, organically, leads into the Dark Deku arc, only here, we actually do it better.
Here, him going 'rogue', is an organic evolution of various things that have been going on for probably years now, Izuku slowly depriving himself of all things that gave him joy, in favor of training for his Mission, TM, this Grand Purpose that was thrust upon him.
Here, his classmates going to save him makes more sense because we've seen them interact, we've seen their growing concern over how he's been changing.
All of these things happen, and come together for this moment where the story finally admits what it's been dancing around all this time: Izuku is not OK. And at last, finally, starts to actually resolve it.
