Where Can I Publish Anime OCs Fanfiction For Maximum Exposure?

AO3 is honestly your safest bet for a long-term home. It’s got the tagging system down to a science, which is crucial for something like 'Attack on Titan' with its sprawling lore and established pairings. You tag your OCs properly—maybe 'Original Scout Regiment Character(s)' or 'OC-centric'—and people actively looking for that stuff will find it. The kudos/comments system also feels more genuine for feedback compared to just view counts. That said, I’ve seen a ton of AoT OCs thrive on Wattpad. The audience skews younger and seems more open to diving into original characters inserted into the canon plot. The algorithm can be a nightmare, but if you network in the AOT fanfic clubs there, you can get some real traction. Just be ready for a very different vibe; it's less about literary merit and more about immediate, chatty engagement. FanFiction.net still has a dedicated AoT reader base, though it’s smaller and a bit quieter. It’s where the older, maybe purist segment of the fandom hangs out. Your exposure might be lower in raw numbers, but the readers you get tend to be incredibly loyal and provide detailed reviews. I’d cross-post between AO3 and one of the other two, honestly. Never put all your eggs in one basket when fandom platforms can change on a dime.

I've had decent luck posting mine on Archive of Our Own. The tagging system over there is super thorough, so you can mark it as 'Kimetsu no Yaiba', add 'Original Character(s)', and get pretty specific with stuff like 'Demon Slayer Corps-centric' or 'Post-Mugen Train Arc'. That helps the right readers find it. I'd avoid Wattpad for something that's more niche like an OC-heavy demon slayer story, the algorithm there seems to favor reader-insert romances a lot more. AO3's comment culture is generally pretty constructive if you engage with it. I got some genuinely helpful notes on my OC's sword technique fitting into an existing breathing style, which made me go back and tweak some chapters. Just be prepared that feedback might be slower than for popular ships, but when it comes, it's often from people who really know the lore.