# That one AU Fanfic, one more part

**URL:** <https://undertale.wiki/d/t/that-one-au-fanfic-one-more-part/7440>\
**Category:** Fangames and AUs\
**Created:** [August 3, 2026, 2:17am UTC](https://undertale.wiki/d/t/that-one-au-fanfic-one-more-part/7440 "2026-08-03T02:17:16Z")\
**Posts on this page:** 20\
**Page:** 34

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**Author:** ![Palladium\_standard](https://undertale.wiki/d/user_avatar/undertale.wiki/palladium_standard/32/25844_2.png) [@Palladium\_standard](https://undertale.wiki/d/u/Palladium_standard)\
**Post date:** [September 19, 2026, 2:06am UTC](https://undertale.wiki/d/t/that-one-au-fanfic-one-more-part/7440/665 "2026-09-19T02:06:57Z")

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> [@HarbingerKnightTheSecond](#):
>
> Oh  
> Radiance still a HD moth  
> — **Darn it**

I cast Amplify  
@sansbot roll 1d20

---

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**Author:** ![sansbot](https://undertale.wiki/d/user_avatar/undertale.wiki/sansbot/32/12_2.png) [@sansbot](https://undertale.wiki/d/u/sansbot)\
**Post date:** [September 19, 2026, 2:06am UTC](https://undertale.wiki/d/t/that-one-au-fanfic-one-more-part/7440/666 "2026-09-19T02:06:59Z")

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> 🎲 17

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**Author:** ![Palladium\_standard](https://undertale.wiki/d/user_avatar/undertale.wiki/palladium_standard/32/25844_2.png) [@Palladium\_standard](https://undertale.wiki/d/u/Palladium_standard)\
**Post date:** [September 19, 2026, 2:07am UTC](https://undertale.wiki/d/t/that-one-au-fanfic-one-more-part/7440/667 "2026-09-19T02:07:12Z")

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:floweylaugh:

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**Author:** ![HarbingerKnightTheSecond](https://undertale.wiki/d/user_avatar/undertale.wiki/harbingerknightthesecond/32/26163_2.png) [@HarbingerKnightTheSecond](https://undertale.wiki/d/u/HarbingerKnightTheSecond)\
**Post date:** [September 19, 2026, 2:28am UTC](https://undertale.wiki/d/t/that-one-au-fanfic-one-more-part/7440/668 "2026-09-19T02:28:04Z")

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She's now  
A big moth  
 ![IdleMooth](https://undertale.wiki/d/uploads/default/original/3X/f/7/f7a1704eec39a2d48eabff4b383ab6cb2230a954.gif)  
That's about it  
Taking is easier than giving, specially Godhood...

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**Author:** ![Palladium\_standard](https://undertale.wiki/d/user_avatar/undertale.wiki/palladium_standard/32/25844_2.png) [@Palladium\_standard](https://undertale.wiki/d/u/Palladium_standard)\
**Post date:** [September 19, 2026, 4:41am UTC](https://undertale.wiki/d/t/that-one-au-fanfic-one-more-part/7440/669 "2026-09-19T04:41:09Z")

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can I ride her now\[1\]

* * *

1. she's at least better than, say, potato GLaDOS...

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**Author:** ![Kk\_Cayden\_K](https://undertale.wiki/d/user_avatar/undertale.wiki/kk_cayden_k/32/185_2.png) [@Kk\_Cayden\_K](https://undertale.wiki/d/u/Kk_Cayden_K)\
**Post date:** [September 19, 2026, 2:51pm UTC](https://undertale.wiki/d/t/that-one-au-fanfic-one-more-part/7440/670 "2026-09-19T14:51:20Z")

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I’m back, what did I miss?

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**Author:** ![Errandomguy62](https://undertale.wiki/d/user_avatar/undertale.wiki/errandomguy62/32/25634_2.png) [@Errandomguy62](https://undertale.wiki/d/u/Errandomguy62)\
**Post date:** [September 19, 2026, 2:53pm UTC](https://undertale.wiki/d/t/that-one-au-fanfic-one-more-part/7440/671 "2026-09-19T14:53:38Z")

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I am also back: of course. You mentioned cult of the lamb, SO OF FUCKING COURSE I HAVE THE THING NOW

not like I’m complaining.  
I now follow the path back and go to the other path I marked with my sword

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**Author:** ![HarbingerKnightTheSecond](https://undertale.wiki/d/user_avatar/undertale.wiki/harbingerknightthesecond/32/26163_2.png) [@HarbingerKnightTheSecond](https://undertale.wiki/d/u/HarbingerKnightTheSecond)\
**Post date:** [September 19, 2026, 7:51pm UTC](https://undertale.wiki/d/t/that-one-au-fanfic-one-more-part/7440/672 "2026-09-19T19:51:20Z")

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> [@Kk\_Cayden\_K](#):
>
> I’m back, what did I miss?

Errandomguy62 is in the dream version of Celestial Resort  
Palladium has a giant Mooth Radiance  
You're at Forsaken City's start...

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**Author:** ![HarbingerKnightTheSecond](https://undertale.wiki/d/user_avatar/undertale.wiki/harbingerknightthesecond/32/26163_2.png) [@HarbingerKnightTheSecond](https://undertale.wiki/d/u/HarbingerKnightTheSecond)\
**Post date:** [September 19, 2026, 7:56pm UTC](https://undertale.wiki/d/t/that-one-au-fanfic-one-more-part/7440/673 "2026-09-19T19:56:13Z")

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> [@Palladium\_standard](#):
>
> can I ride her now

Nope  
Try riding another sapient being to see the results

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**Author:** ![HarbingerKnightTheSecond](https://undertale.wiki/d/user_avatar/undertale.wiki/harbingerknightthesecond/32/26163_2.png) [@HarbingerKnightTheSecond](https://undertale.wiki/d/u/HarbingerKnightTheSecond)\
**Post date:** [September 19, 2026, 7:56pm UTC](https://undertale.wiki/d/t/that-one-au-fanfic-one-more-part/7440/674 "2026-09-19T19:56:35Z")

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But maybe its something good  
Y'all know i'm writing this as it happens right?

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**Author:** ![HarbingerKnightTheSecond](https://undertale.wiki/d/user_avatar/undertale.wiki/harbingerknightthesecond/32/26163_2.png) [@HarbingerKnightTheSecond](https://undertale.wiki/d/u/HarbingerKnightTheSecond)\
**Post date:** [September 19, 2026, 9:57pm UTC](https://undertale.wiki/d/t/that-one-au-fanfic-one-more-part/7440/675 "2026-09-19T21:57:13Z")

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> [@Errandomguy62](#):
>
> I now follow the path back and go to the other path I marked with my sword

You follow back the trail...  
The footprints lead to a room with a pit full of Dust Bunnies. The trail seems to make a turn and walks on the wall...  
The pit seems to large to be jumped through. Suddenly, the wind blows. Your hair\[1\] turns ginger? And a bit longer on the back. The Red Strand you cut of Madeline is blown away and falls down the pit... Its purpose was used up.

* * *

1. Daily reminder you're the Vessel

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**Author:** ![HarbingerKnightTheSecond](https://undertale.wiki/d/user_avatar/undertale.wiki/harbingerknightthesecond/32/26163_2.png) [@HarbingerKnightTheSecond](https://undertale.wiki/d/u/HarbingerKnightTheSecond)\
**Post date:** [September 19, 2026, 9:57pm UTC](https://undertale.wiki/d/t/that-one-au-fanfic-one-more-part/7440/676 "2026-09-19T21:57:40Z")

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Wait  
I can post more than 3 consecutive replies now? Cool

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**Author:** ![Palladium\_standard](https://undertale.wiki/d/user_avatar/undertale.wiki/palladium_standard/32/25844_2.png) [@Palladium\_standard](https://undertale.wiki/d/u/Palladium_standard)\
**Post date:** [September 20, 2026, 1:17am UTC](https://undertale.wiki/d/t/that-one-au-fanfic-one-more-part/7440/677 "2026-09-20T01:17:01Z")

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only if you're op

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<div class="post-metadata">

**Author:** ![Palladium\_standard](https://undertale.wiki/d/user_avatar/undertale.wiki/palladium_standard/32/25844_2.png) [@Palladium\_standard](https://undertale.wiki/d/u/Palladium_standard)\
**Post date:** [September 20, 2026, 1:18am UTC](https://undertale.wiki/d/t/that-one-au-fanfic-one-more-part/7440/678 "2026-09-20T01:18:46Z")

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> [@Palladium\_standard](#):
>
> I get my army back here and recruit a but ton more of mantises,

> [@sansbot](#):
>
> 🎲 17, 12

anyways I head with my army and the radiance to the next area we need to go to, speedrun style  
@sansbot roll 1d20

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<div class="post-metadata">

**Author:** ![sansbot](https://undertale.wiki/d/user_avatar/undertale.wiki/sansbot/32/12_2.png) [@sansbot](https://undertale.wiki/d/u/sansbot)\
**Post date:** [September 20, 2026, 1:18am UTC](https://undertale.wiki/d/t/that-one-au-fanfic-one-more-part/7440/679 "2026-09-20T01:18:47Z")

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> 🎲 20

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**Author:** ![HarbingerKnightTheSecond](https://undertale.wiki/d/user_avatar/undertale.wiki/harbingerknightthesecond/32/26163_2.png) [@HarbingerKnightTheSecond](https://undertale.wiki/d/u/HarbingerKnightTheSecond)\
**Post date:** [September 20, 2026, 1:23am UTC](https://undertale.wiki/d/t/that-one-au-fanfic-one-more-part/7440/680 "2026-09-20T01:23:40Z")

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Fuck Sansbot why are you so brokenly easy to exploit

* * *

**NEW RULE:** Only i can roll Sansbot now

* * *

You ride the Blackwyrm with a bunch of Mantises and the Karaka misfits(Aqua's there too) to Pharloom. You crash him again in the mountain, shooting Mantises all over the place and you (Aqua too) onto the Mountain's Summit...  
You get to a small village, where some bugs seem to be preparing for some kind of Festival... You can see, low in the Horizon, a Blue, pale glow...  
Hollup a second 'kay i'm calling the Mantises up there

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<div class="post-metadata">

**Author:** ![HarbingerKnightTheSecond](https://undertale.wiki/d/user_avatar/undertale.wiki/harbingerknightthesecond/32/26163_2.png) [@HarbingerKnightTheSecond](https://undertale.wiki/d/u/HarbingerKnightTheSecond)\
**Post date:** [September 20, 2026, 1:24am UTC](https://undertale.wiki/d/t/that-one-au-fanfic-one-more-part/7440/681 "2026-09-20T01:24:30Z")

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**(Solution version)**  
**Only i can roll Sansbot now**

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**Author:** ![Palladium\_standard](https://undertale.wiki/d/user_avatar/undertale.wiki/palladium_standard/32/25844_2.png) [@Palladium\_standard](https://undertale.wiki/d/u/Palladium_standard)\
**Post date:** [September 20, 2026, 1:46am UTC](https://undertale.wiki/d/t/that-one-au-fanfic-one-more-part/7440/682 "2026-09-20T01:46:05Z")

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> [@HarbingerKnightTheSecond](#):
>
> **NEW RULE:** Only i can roll Sansbot now

ok I'll just say this:  
In a roleplay campaign, this is a ST[error]PID regulatory rule.  
like really

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<div class="post-metadata">

**Author:** ![Palladium\_standard](https://undertale.wiki/d/user_avatar/undertale.wiki/palladium_standard/32/25844_2.png) [@Palladium\_standard](https://undertale.wiki/d/u/Palladium_standard)\
**Post date:** [September 20, 2026, 1:47am UTC](https://undertale.wiki/d/t/that-one-au-fanfic-one-more-part/7440/683 "2026-09-20T01:47:10Z")

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> [@HarbingerKnightTheSecond](#):
>
> You crash him again in the mountain, shooting Mantises all over the place and you (Aqua too) onto the Mountain's Summit...

son it was a nat 20

> [@HarbingerKnightTheSecond](#):
>
> You get to a small village, where some bugs seem to be preparing for some kind of Festival... You can see, low in the Horizon, a Blue, pale glow...  
> Hollup a second 'kay i'm calling the Mantises up there

go around and ask them what they're doing  
propably lifeblood stuff but eh

> [@HarbingerKnightTheSecond](#):
>
> **(Solution version)**  
> **Only i can roll Sansbot now**

booooooooooooooooooooooooooo

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<div class="post-metadata">

**Author:** ![HarbingerKnightTheSecond](https://undertale.wiki/d/user_avatar/undertale.wiki/harbingerknightthesecond/32/26163_2.png) [@HarbingerKnightTheSecond](https://undertale.wiki/d/u/HarbingerKnightTheSecond)\
**Post date:** [September 20, 2026, 2:00am UTC](https://undertale.wiki/d/t/that-one-au-fanfic-one-more-part/7440/684 "2026-09-20T02:00:40Z")

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> [@Palladium\_standard](#):
>
> In a roleplay campaign, this is a ST[error]PID regulatory rule.  
> like really

Just ask, since you can't just go and ruin the narrative...

> [@Palladium\_standard](#):
>
> son it was a nat 20

But you got just where you need to be  
The Blackwyrm crashing in a mountain is a Canon event /j

> [@Palladium\_standard](#):
>
> go around and ask them what they're doing

You ask what's happening to the nearest bug.  
— Oh, welcome traveler! We're setting up the town's millenar tradiction, the _Festival of the Blue Moon_. Once in centuries, the Blue Moon rises in the starless sky above us to brighten the land for 3 years before setting down again, and at the very start of such divine event, we celebrate! Recently, that giant stalk started to grow, so i fear we won't be able to see the Blue Moon at its best spot tonight...  
The place's title appears:

* * *

_ **The named town** _

# Celestine

### _The city in the sky_

* * *

I thougth about the name before i knew Celeste, don't judge me  
The Flautistaff shines you a way to the stalk's base...

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