Heavenfell

* Isn't it beautiful, everyone?

This article contains information that is from a completed AU. All parts of the story have been released and are readable at any time.

For other versions of Underfell, see Underfell (disambiguation).

Heavenfell is an AU based off Underfell, a different take created by Castel. Heavenfell begins with Frisk having fallen into the Underground and needing to cross the Barrier to return to the surface. Following that, this AU's plot closely follows that of Underfell, with Frisk and Flowey teaming up as pacifists trying to befriend the monsters of a twisted world where it's kill or be killed.

Unlike Underfell, as Frisk travels through the Underground, they develop an illness that causes black marks to form all over their body. Though they don't know what it is, Frisk feels they only have a limited time to escape the Underground before succumbing to this condition.

v·d·e Continuity Change
Backstory	All Good Things • Alone • Amalgam • Darker Yet Darker • EUC • Gaster Bros • GeneticTale • Handplates • Kaard Case • Making A Name • Memories: The Story of Asriel and Chara • Once Upon a Time • Our Story • Reminiscence • Six Souls • Sole Sufferer • The Flowers Bloom away from Home • The First Human • The Second Son of Gaster • Undertale Green • Undertale Purple • Undertale Yellow • Undertale: Kindred Spirits • WiseTale
Special Event	A Fatal Error has Occurred • AccusionTale • Act to Flirt • AfterGrave • Aftertale • Aftertale: Black • Afterwards • Akintale • All We Left Unsaid • Alliancetale • Alphatale • Altergeno • AlterTale has been Taken • Another Take • Ask Glitch and Squid • Ask Mercy Series • AsylumTale • Auverse Chronicles • Axetale • Beastly Underfell • Blackfell • Blizztale • BlossomTale • Brokentale • Caretaker of the Ruins • ChocoBlook • Chronotale • COOLSKELETON59 • CORETale • Coronation • Corrupted File • CreaseTale • Crimson Hunt • Crystaltale • Damned Monarchy • Daytale • DeathTale • Defragmentation • Deltarune: Missing Light • DemonHunterTale • Despotale • DeTale • DeVoidTale • Dire!Tale • Disbelief • Dolltale • Dragontale • Dread Not • Dreemurr Reborn • Duotale • Dusttale • Echotale • Endless Route • EntropyTale • Epictale • Erasure Inverted • FactionTale • Faithtale (ROADRUNNER) • Fallen Brothers • Fallen Flowers • Fallen Stars • Far Away, Standing Near • FateTale • Felldust • Felltale • Final Tragedy • Flora Frisk • FlowerPop • Flowey's World • Foiltale • Freaktale (Preboot) • Frisky Caretaker • Funtale • Fusiontale • Gamatale • Gentale • Ghost Switch • Glitched Reset • Glitchtale • Gonerdweller • Goopytale • Greattale • Handplates and Dogtags • Hatetale • Heavenfell • HELP_tale • HELP tale: Continue • Hollowtale • Honesty • Horrorrune • Howlingtale • Inktale • Inktale: Dreemurr Redrawn • INSANITY! Tale • Inverted Fate • Irontale • Island Fall • JudgementTale • Kindred Spirits • Kingdom Come • KurayamiTale • Lewstale • LifeXtale • Light, resected • LogTale • MagicTale • Mainverse Taken!Altertale • Maniatale • Mayhem Memoirs • Metal and Magic • Metal in the Underground • Monotale • Monster Friends • MonsterTale • Mooktale • Mothertale • Mystitale • Name the Fallen • Night Orchards • New Prophecy • NyxTale • Only Funny • Opposed Demise • Othertale • Our Cracked Broken Star • Paper Trail • Playbacktale • Polveratale • Possession • PrepTale • Primus Underfell • ProemTale • Psychetale • Psychotale • QuantumTale • Recluse Buster • Redemptale • Rusted Fates: ACT 1 • Ribbit • Rosefell • Rulesrune • Rupturedtale • Salt Route • Scramble Saga • Screentale • Shadowtale • Shattered Realities • SlimeTale • Slumbertale • Something New • Sondertale • Soulblend : An Undertale Story AU • Soulstale • StaticTale • Sudden Changes • Swaptale • SwordsTale • Synthtale • Terms & Conditions • The Brothers • The Cold, Hard Dreemurr • The Games of Creator • The Merciful SOULS • The Soul of Love • The Thought • Timetale • TrioTale • Tristedtale • TwinTale (The Story of the Eight and Ninth Human) • Twitchy Timeloop • Ultimatale • Ultra!Tale • Umriss • Uncertain Reality • UnderAnomaly • Underbinary: The Digiverse • UnderBunker • Underchaser • Undercore • Undercorpse • UnderDecay • UnderDestiny • Underfire • Underfuck • Undergale • Undergamer • Underhope • UnderHunt • Underkeep • Underlie • Underlust • Underplayer • UnderSalem • Undersource • Undertake • Undertake承诺之下 • Undertale Distorted, Distinctive Destiny • Undertale Rho • Undertale2 • Undertale: Chronicle • Undertale: Cloneberry • Undertale: Failed Genocide • Undertale: Fratricide • Undertale: Reshuffled • Undertale: The Creatosphere • Undertale: The Cutting Edge • Undertale: True Genocide • Undertαle (Undertale Alpha) • Undervirus • UnderWar • Union of Two Hearts • Urbantale • UT!Reload • Velvet Bones • Versotale • ViralTale • Voxistale • Vĕdomitale • WhyTale • Xénotale • Zanatale • Zombietale
Post-Pacifist	Alterdune • Ask Frisk and Company • Asrieltale • ChiselTale • Choco-Tale • Crazedtale • DeeperDown • Definitely Not Deltarune • DystopicFate • Endertale • Heart and SOUL • Hidden • Jester • MajickTale • Marlette • Megatale • Mettaghetti • OtherWorld • Overstory • Overtale • PSA Undyne • PTA Sans • Shadows of the Past • Stellartale • Surface Tension • The Daily School Life • The Golden Quiche • The Overseer • Thorns • TutorialTale • UnderRestart • Undertale 2: Revenge of the Robots • Undertale Love Story • Undertale: Kissy Cutie • UnderVanquish • Unexpected Guests • Unstabletale • Wholehearted Half-Souls • Wholehearted Saga: Origins • Woven Souls • X-Tale
Post-Neutral	A human named Aliza • Alphys and the Queen • Behind the Throne • Creatortale • Desperatale • Entity NEO • Glamorytale • Glamourtale • God Save The Queen • Gritfell • Hopetale • Horrorswap • Horrortale • Mettatale • Repairs and Restorations • Royal Bullet • Standing By Your Side Whether You Like It Or Not!!! • Tainted Cloak • The King is Dead, Long Live the Queen • The Usurper • Under the Experiments • UnderGuard • Undertale Chordus • Utopiatale
Post-Genocide	Alive • Asundertale • Dreamborne • Insomnia • Nightmaretale • Quite the Mishap • Rectus Resilience • Redemption!Frisk • Transcend Darkness • Undersworn
Post-AU	Apprentice to Error • Dawnbreak • Errortale • Errortale Season 2 • Lost • Undertale Psi • Underverse • YandereChara
Crossworld	Asgore Makes an Among Us AU • Bowser's Cavern Conquest • Buttontale • Death's Tale • DeltaTraveler • DragonTale Z • Hollowtale (TheJessOfMess) • Hungerswap • Interlopers • Majoratale • OFFtale • Patroltale • Phineas and Ferb fix everything • Pokemon Mystery Dungeon Tales of Undergrounds • Serpent HandTale • Seven-kwaidan Tale • The Legend of Asriel • Total Drama Tale • Trainertale • Twin runes • UnderTheDarkSoul (UTDS) • YellowTale

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Heavenfell

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