Board Thread:General Discussion/@comment-26006155-20190820122909/@comment-26006155-20190822230933

And yet Asriel does turn back into Flowey.. but only at a game restart.

Human SOULs  have the ability to remember things between resets, and do the Save and Load feature. I'd be very surprised of Save and Load weren't two of the words in the SOUL acronymn.

But Flowey does mention that Chara seems to have more determination than he does in the Genocide TImeline, so he can't Save and Load anymore since Chara's determination exceeds his. Although after absorbing six more human SOULs, Omega Flowey IS able to Save and Load, while Frisk cannot, writing over his own death.

Undyne, who has human Determination but a regular monster SOUL, can fend off death to a degree, and achieve high power levels. But Undyne cannot Save and Load, or remember things between playthroughs.

Flowey must have a human SOUL in order to mimic the human ability of being the main character in his own video game, and Save Scumming. And he definitely remembers details between saves.

Asriel believed that he was souless at the end of a True Pacifist run. Even though the game states compassion comes from the SOUL, and after a whole game of having a compassion-damaged SOUL, he's finally able to feel the compassion he used to be known for, seemingly sacrifice himself to free his people, then walks deep into the Underground to save them the pain of losing him, a second time.

Asriel believes that he's souless, and is doomed to fade. But we never actually see him fade in the game. He's still Asriel in Deltarune, years later. And he only turns back into Flowey if we, the player, force him to be restarting the game with our own powers.