Main plot

In one corner of the multiverse, Gaster bred a baby. He's Wistfulness, UT! Sans，UT!Dreemurr and Gaster's power.

Because he's sou is wistfulness, he named him Wist.

Gaster then bred Papyrus, Undyne, Frisk, etc., who lived together for a long time. No one noticed Gaster's anomaly.

At Sans' 34th birthday party, Frisk goes to the lab to find the fallen flowers, but Chara, created by Gaster , kills Papyrus and Undyne. Sans realized that Gaster was the one who started it all. Gaster asks Sans to kill Frisk himself, but Chara escapes.

A day later, Alphys said Chara came, and Mettaton was stopping them, asking Sans to help. Sans rushed over and saw only Mettaton's shattered parts. He then fought Chara.

Gaster watched silently, reclaiming the power while Sans's distract. Chara takes the opportunity to strike Sans, and then Gaster appears in the shadows, erased Chara, and imprisons Sans.

Feeder 1

Gaster works in the lab, studying the characteristics of the souls, but accidentally has an accident.

In the vessel, red determination is covered with a brown substance, and the determination is blackened into "jealousy" (jealousy is the brown soul). The twisted soul needs a host to become powerful, so it parasitizes on a nearest living body, and Gaster becomes a parasitic monster.

Author: EpicWist https://www.bilibili.com/read/cv18419635