Best Alphyne Slow Burn Fanfics
The best slow burn Alphyne (Alphys/Undyne) fanfiction on AO3, curated by popularity. Readers love the anticipation, the meaningful character development, and the eventual payoff of a well-earned romance.
Top Alphyne Slow Burn Fic Recs
1 slow burn Alphyne fic matched, followed by other top-rated Alphyne stories.
What's Keeping You Here
Slow Burnby MissSugarPink
Your name is unimportant. Your job is nonexistent, really. And your (ex)roommate just kicked you out in the middle of a surprisingly cold November night. But whatever. You don't care. You'll be fine. Keep telling yourself that as you freeze to death, idiot. But you'll be fine, for one reason! Two, a
Making A Monster
by absurdmagewrites
Sometimes life throws you a curveball. For you, your curveball was going to bed looking like a human, and waking up looking like a monster. A skeleton monster to be precise. With the barrier breaking, a large surge of magic descended on the town you live in, and transformed you overnight. Unsure wha
Welcome to the Club
by Redacted_Writer
Undyne had been getting increase of dreams, all relating to a child in a blue and purple sweater. Sometimes they would be friends, in others... well...When Sans notices, he figures it's about time to let her in on a secret that only few know about.Welcome to the Awareness Club, Fishstick!
I Just Fell In Love With a War
by PlutoDeity
It all started with a housewarming party where only you showed up. Now, you're tangled up with multiple skeletons and a woman that hates your guts for no reason. As much as you want to act like you don't care, you really do, so what do you do now?It's not like you can survive on your own.
UDY on the Surface
by CommanderBullet
It's been a few years since Monsters returned to the Surface and lots of things have changed... Accompany your favorite characters from Undertale, Undertale Yellow and Deltarune as they try to manage their everyday responsibilities and go through a few wacky adventures while at it in this slice-of-l
Feels Like Company
by girlwhateverdotcom
Mettaton looked back on those rainy days, gazing out of the window and daydreaming as he watched his neighbors go about their lives… Nearly every time, his fantasies of sharing an umbrella with an exceptionally handsome stranger (whose face he could never place) would be hilariously interrupted by t
As The World Caves In
by Acefirstbase
Spamton G Spamton has one goal with this masters program in journalism: to secure the coveted internship with the biggest television studio in town. But he has a problem. A BIG one. And said BIG problem also happens to be his roommate. Tenna is also vying for this position, along with the other two
Flowered Vines Grow on the Memory of the Arch of a Swing-set
by yastaghr
One childhood promise leads to changes that will ripple through the lives of more than just the three skeletons who shared it. When it comes into the spotlight, the result is a wave of change that will effect lives, families, and even an entire web of nations. Will the luck behind it bring good or b
Whimsey is the Music of the SOUL
by tyedyeguy44
A collection of non-canon short stories within the universe and using the characterizations of the characters in my "Where the Flowers Grow" series. While the characters act true to themselves, their histories and circumstances may be different than established canon.
Obvious & Oblivious
by ThatRand0mFand0m
Mettaton, a renowned robotic entertainer who works evenings at a nightclub, is no stranger to the art of flirting. It was part of his job, to charm, to cheer. But when an old friend begins to stop in at the nightclub, things get interesting when she brings a friend. One who immediately caught Mettat
Must Be Dreaming
by pessimistic_frog
Roman is your average college student. Overworked and underfucked. Too little sleep and too much caffeine. However, she starts to find that her serious lack of sleep is leading to some crazy dreams. Dreams in which she's now a skeleton, with three alternates, and a buncha other skeletons that seem h
A Punner Over My Shoulder
by Redacted_Writer
Urban Explorer Frisk falls down into a hole after hearing tales of a lost civilization within the mountain of Ebbot where they are in for a ride no human could have ever predicted.
Maniacal Magical
by Swish42
Our protagonist is once again whisked into a new world against his will, while still mentally recovering from the torment of the Evil Doctor of the last world he was in. He is now stuck in a city where Giant Amalgamates and snarky Giant Flowers attack every week and Magical Mew Mew Cutie Girls make
Between the Monsters and Me: They Call Me Caro
by Feeley
(This is a translation.) Caro didn't want to become "it." She just wanted to keep living. But living becomes complicated when her body constantly reminds her of what she's lost, when people waver between pity and curiosity, and when nightmares refuse to die. Then Papyrus enters her life with all the
Determination: Or in which Chara, Frisk, and Asriel Try To Run A Government.
by Friskriel15
So, you succeeded. You, Chara, and Asriel ended the Undertale, and all is well and good. The monsters are free, and they even have a kingdom on the surface. There's just one tiny problem. You know those mages that sealed the monsters under Ebott? Yeah, they're still around-or at least, their descend
Tending Hands
by Tardigrade_on_a_little_patch_of_moss
It had been 3 years since you had decided to settle in the city. 3 years after the barrier was shattered and monsters were released from the underground becoming common knowledge. You were still trying to get your life together in the city after you left home but it was getting easier. After decidin
Entre les monstres et moi : On m’appelle Caro
by Feeley
Caro ne voulait pas devenir “ça” Elle voulait juste continuer à vivre. Mais vivre devient compliqué quand son corps lui rappelle constamment ce qu’elle a perdu, quand les gens hésitent entre la pitié et la curiosité, et quand les cauchemars refusent de mourir.Puis Papyrus entre dans sa vie avec tout
Oneshots Different Au Sans x Reader
by Andrea777Cats
No summary provided.
STEWIE GRIFFIN COFFEE MUG
by floopstuffs
When a story gets told over and over, sometimes the details muddle together, memories blur together, you can't quite remember exactly how it was but you can just remember it. A vague visage of what it once was at least. That's just how repetition works, doing something over and over and over and ove
Undertale Traitor Route
by BulbamanPL
WARNING! I do not own Undertale. If I did, things would be different!WARNING! English is not my main language. Some mistakes can be present in the language.WARNING! I'm not in a financial status to collab with anyone for paid art-projects. This is true for every single work of mine here.WARNING! Thi
Find More Alphyne Slow Burn Stories on AO3
Browse the full AO3 archive for slow burn Alphyne fanfiction, sorted by kudos. Then read offline with Fanfict Reader.
Why Slow Burn Alphyne Fanfiction Works So Well
Alphys/Undyne — The anxious scientist Alphys and the fierce warrior Undyne, whose opposites-attract dynamic is canon in the game.
Slow Burn — A romance that develops gradually over time, with tension building across chapters or the entire story.
Their canonical relationship development and the sweet contrast between Undyne's boldness and Alphys' shyness creates heartwarming stories. Readers love the anticipation, the meaningful character development, and the eventual payoff of a well-earned romance. That's why slow burn Alphyne fanfiction is one of the most consistently popular combinations on AO3.
More Alphyne Tropes
Alphyne · Hurt/Comfort
One character is hurt (physically or emotionally) and another provides comfort and care.
Read hurt-comfort →
Alphyne · Fluff
Light, happy, feel-good stories focused on sweet moments and happiness.
Read fluff →
Alphyne · Humor
Fic written to make you laugh: crack premises played straight, group-chat chaos, banter-driven romcoms, and comedies of errors starring characters canon treats with deadly seriousness. One of AO3's biggest tags for good reason.
Read humor →
Alphyne · Romance
The broadest banner in fanfiction: stories where a relationship is the plot. Every flavor lives under it — slow burns and instant sparks, first kisses and fiftieth anniversaries — across every rating and every fandom on the archive.
Read romance →
Slow Burn in Other Ships
Love slow burn? Explore the same trope in other popular pairings:
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