(I've left the fandom, but I still love UT. There's enough story left for at least several hundred chapters, and this work is my heart and soul, so I promise I'll keep writing it. I'll also continue posting AU-related creations on Bilibili.)
By now, Ye Yu had mastered gathering that energy by grazing bullets. It let him rapidly replenish his determination and perform some truly incredible feats.
Ye Yu pulled back, watching Asgore radiate terrifying power.
Asgore's HP had already reached 0. By all rights, he should have died, but how could a Demigod be judged by ordinary rules?
Through the power of the six souls, Asgore's body had become conceptual.
Just as Flowey had done to Frisk in the neutral route, Asgore pulled Ye Yu into his own world.
It was a world bathed in bright sunlight. The light overhead was not sunlight simulated by magic in the Underground, but the light of the real sun.
Monsters lived happily in this world, this world filled with sunlight.
There were human villages nearby, too, and their inhabitants exchanged friendly greetings with the monsters.
Two children in yellow-and-green striped shirts ran past: a little human girl with short brown hair and a monster with some goatlike features.
In a tavern, a group of humans and monsters sat together, seemingly sharing a meal.
Beneath a pavilion, a group of elderly human men played chess with several elderly monsters.
Everything here was merely an illusion, but it all reflected Asgore's deepest wishes.
Yet Ye Yu had no emotions. None of it could move him.
Even within Asgore's world, filled with beauty and warmth, his heart remained cold.
Asgore tried to reach him through emotion, to use the illusion to awaken whatever trace of tenderness might exist deep in his heart, but it was