Momo X Okarun Novels & Stories

Finding a dedicated series that crosses over 'Dandadan' with another universe is tricky; those two are so specifically weird that they don't always mesh easily. Most of what I've seen are one-shots or shorter fics.

For anything resembling a series, AO3 is still your primary archive. Use the character tags for 'Momo Ayase' and 'Okarun (Dandadan)' and then filter for the 'Crossover' category and multi-chapter works. The 'Series' function on AO3 will group them if an author is doing something long-form. It's a sparse tag, though; you might have better luck looking for authors who specialize in 'Dandadan' fics and seeing if they've ventured into crossovers.

A less direct route is checking if the fandom has a presence on SpaceBattles or Sufficient Velocity forums. Those sites love big, plotty crossovers, and while I haven't seen a Momo/Okarun one take off yet, someone might have started a thread that's worth following. The search function there is notoriously bad, so it's more about lurking in the right Creative Writing sections.

Honestly, you might be waiting for the anime to drop and spark more fic activity before a substantial crossover series appears; the energy in that manga feels hard to translate into another world without losing its specific charm.

I've read probably over a hundred 'Dandadan' fanfics at this point, and the momo/okarun dynamic gets dissected in the most fascinating ways. The canon material gives us this brilliant foundation—two teens thrown together by the paranormal, one pragmatic and grounded, the other hilariously earnest and powerful. Fanfic writers latch onto that contrast like glue.

A huge chunk of the fics I see focus on the awkwardness-to-comfort pipeline. Canon shows them getting used to each other's weirdness, so fanfic naturally extends that into domestic scenarios. I love the ones where they're stuck studying together or trying to have a normal meal while some residual ghostly nonsense happens. It's less about big romantic declarations and more about finding your person in the chaos, which feels true to the series' vibe.

Then there's the trope-flippers who go the opposite route, writing super intense, angsty stuff about Okarun's dual nature or Momo's trauma from the early chapters. Those can be hit or miss for me—sometimes they lose the humor that balances the series. But when they nail it, the emotional payoff feels earned because it's rooted in their established dynamic of protection and vulnerability. The best fics, honestly, are the ones that remember Okarun's sheer dorkiness is as much a part of him as the Turbo Granny power.

Honestly? I always thought their whole thing was about confronting the self more than any romance. Okarun starts off a literal mask, right? A conduit for Momo's anger and grief. The emotional growth isn't them 'fixing' each other; it's them forcing the other to look at the ugly parts they'd rather ignore. Momo's rage isn't pretty, and Okarun's initial blank-slate nature mirrors how she'd built walls. Their growth comes from that friction—Momo learning to direct her passion constructively, and Okarun developing his own desires separate from being her weapon. The pairing works because their dynamic is so raw and unfiltered; it's less hand-holding and more two people grabbing each other's shoulders and shaking until the real person falls out.

I see a lot of people talk about the tender moments, which are there, but the foundation is that brutal honesty. When Okarun finally makes a choice for himself, it's a huge moment of growth for Momo, too—she has to accept an ally, not a tool. Their journey from user-and-tool to equals who trust each other with their vulnerabilities... that's the core of it for me.