Uploaded October 2023 | Updated September 2026, 1 day ago

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Here's No AU - Aegalo, my own ainavol style who kinda works similarly to COTV because he has a DT Extractor floating behind him all the time, that only appears when necessary.

-= Lore =-
Aegalo was just like any other normal Sans, living his life in The Underground without a care in the world, but after the Genocide Route turned Sans's life on its head, he decided to take matters into his own hands.

He went to The Barrier to take the PERSEVERANCE SOUL, he ended up encountering Asgore, who was there looking at The Barrier. Asgore tried to prevent Sans from taking the SOUL, claiming that it is needed to break The Barrier, but when Sans still went to take it, Asgore fought him, but ultimately ended up losing. Sans killed Asgore & took the PERSEVERANCE SOUL & then went to The True LAB to acquire the numerous vials of DETERMINATION from the days of the DETERMINATION experiments.

Once he acquired the vials, he stole an artificial SOUL & injected it with the DETERMINATION vials to create a DETERMINATION SOUL, which he then merged it with his own SOUL which already had the PERSEVERANCE SOUL in it. As the merging was taking place, The Distinctive Trait Extraction Machine (The DT Extractor) lifted from the wall & became one with him, allowing Sans to make it appear & disappear at his command.

Once that was all done & completed, he went to the Judgement Hall to face Chara. Once she arrived, she noticed Sans was different & similar to her in DETERMINATION. The battle began & Chara seemed like she was winning, Sans made The DT Extractor appear & remove half of Chara's DETERMINATION (Similar to how it is done in Saster's Call Of The Void). With Chara severely weakened, she still fought anyway, to do what she does best, kill without mercy.

As the battle reached its peak, Sans trapped Chara in a pile of blue bones & activated The DT Extractor to bring back someone from Sans's past, his sister, Sable (Similar to COTV). With the duo at the peak of their power (Sable didn't become a Lost SOUL), they fought against Chara, making sure she couldn't RESET because of the duos combined DETERMINATION being higher than her own.

The battle went on for many days before Chara eventually died due to lack of DETERMINATION, because Sans & Sable still had The DT Extractor on, slowly taking Chara's DETERMINATION, well what she had left.

After the fight, Chara turned to dust & floated away on the air. Sans & Sable went to The Barrier & broke it, using their combined DETERMINATION & the shared use of The other Five SOULs.

- Credits -
Undertale: Call Of The Void by: @sasterofficial
Undertale by: Toby Fox
Aegalo!Sans & Sable by: @aurispheresounds2285
ainavol by: kae
Sprites by: @aurispheresounds2285

- Tags -
#undertale #sansaus #ainavol