Companion Piece — Tag Meaning
A canonical tag for works that sit alongside another story rather than before or after it: the same events from a different POV, a side character's parallel day, a scene the main fic skipped. Authors link the paired works in notes or a series.
What to Expect From "Companion Piece" Fics
Richer reading if you know the partner work, though many stand alone. POV-flip companions to popular fics are a beloved tradition.
How to find Companion Piece fics on AO3
On AO3, click any tag to see every work that uses it, then refine with the "Filters" sidebar — combine it with your fandom or ship, set a rating, or exclude tags you don't want. See our AO3 filtering guide for the full walkthrough.
Browse "Companion Piece" works on AO3Popular Fics Tagged "Companion Piece"
Real examples from AO3's most-kudosed works:
Related Tags
Missing Scene
Fills a specific gap in canon: what happened in the elevator between floors, during the off-screen carriage ride, in the three days the episode skipped. It's archaeology as fanfic — authors excavate moments the camera abandoned, and the best ones make you believe the scene was always there, just unfilmed.
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Sequel
A canonical tag marking a work as a continuation of an earlier story, usually the author's own, linked through AO3's series feature. It tells readers there is required or recommended reading before this one.
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Alternating POV
A canonical tag for narratives that switch viewpoint between characters, usually trading off by chapter or scene break. Romance writers prize it for dramatic irony: the reader sees both halves of a mutual pining problem neither character can.
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POV Outsider
A canonical tag for stories narrated by someone outside the main characters' inner circle: the barista who watches two regulars fall in love, the new recruit baffled by the team's legends. Fandom adores the form for letting familiar characters be seen freshly, as strangers see them.
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More Format & Structure Tags
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