After killing Flowey, Chara (the first human) appears on the black screen and talks to someone: either the protagonist, or the player directly. The window name becomes blank with no border.

Chara explains that the protagonist's determination was the reason that the former came back, saying the player taught them the reason for their return, power, and gave them the means to gain it. It was the protagonist's SOUL and determination that allowed them to destroy everything so that they could achieve this goal. They offer to destroy the world so that the two of them can move on to another world. At this point, two prompts are given: "ERASE" or "DO NOT."

If the player chooses "ERASE," Chara calls the player "a great partner." followed by hollow eyes and stating that Chara and the player will be together forever, resulting in the world's destruction.

Choosing "DO NOT" causes Chara to be seemingly surprised at the player's refusal, thinking that the player must have misunderstood them. Chara then asks the player "SINCE WHEN WERE YOU THE ONE IN CONTROL?" with hollow eyes, which then results in a jumpscare. Chara then approaches the screen with a horrifying facial expression while apparently laughing, emitting a horrible noise as the screen shakes while flashing red and black.