Best Mature Pro Hero AU Fanfics
The 5 most-loved mature pro hero au fanfics on AO3, ranked by kudos. Fans get to see the kids they watched train actually make it — and adult heroes can carry storylines about burnout, fame, and partnership that school-age canon can't.
Top 5 Mature Pro Hero AU Fanfics
Ranked by AO3 kudos. Every fic on this list is tagged with pro hero au and rated Mature.
Glycerin
by midnightdreaded
Bakugou Katsuki is rendered comatose after a particularly nasty fight, and you, a pro-hero healer, must take care of him to ensure he wakes up. Lucky for you, it doesn't take much, considering how much will to live the blonde with anger issues has. In all his time as a pro-hero, he struggled to clim
Buried Alive
by Hyuge
When Katsuki fails to check in at the end of his shift, it puts the entire hero community on high alert. A string of low-ranked hero disappearances turns out to be more sinister than anyone thought. Eijirou struggles to keep his composure when each passing minute pushes Katsuki closer to death.
roman candle
by razorsinmyreeses
They say that those born with healing quirks have the natural impulse to help. You've never bought into it; people who can mend broken bones and repair gaping wounds were rare, certainly rarer than the throngs of prospective heroes flaunting their super strength for all the world to see. Insisting t
Shelter
by RosenMae
Katsuki and Eijiro get trapped in a snowstorm with limited resources, and a severe injury to deal with.
stat. rap.
by Mook_aron
there is a key in midoriya izuku’s hand, and a door that opens too easily. inside, the apartment is warm. gold balcony lights tremble in the kitchen window, soft through the glass, and the man he is going to marry calls welcome home from the sink, asks if he remembered the beer. izuku remembered the
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About This List
This list of 5mature Pro Hero AU fanfics spans 80,715 total words. Kudos range from 2 on the newest entries to 86 on the most established. 40% are marked complete — check the status flag before committing to a longfic. The most common rating is Mature (5 of 5 fics).
Recurring tags across this list: Alternate Universe - Pro Heroes (My Hero Academia) · Characters Are Pro Heroes (My Hero Academia) · Alternate Universe - Canon Divergence · Canon-Typical Violence.
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