A million thoughts race through Sans's head as the darkness envelopes them. There's a familiarness to the idea of elemental darkness, like something he's lived with for a long time. A symbol of everything wrong with him, and a constant companion through his life.

He remembers not long ago, how the dark side of himself felt when left to his own devices. It would be so easy to succumb to this despair, this fear. It's practically second nature to him. Yet, as he fear starts to set in, he knows something else that is second nature to him. Something newer, but just as vital, and so important to not let go.

He doesn't have to feel like this forever, he thinks.

He taps into the angelic light of his aura, emitting it around himself like a beacon. Angels are opposed to the darkness, to this decay, and he can remember another life where he was opposed to everything it represented. Maybe, what he has left will be enough.

He projects the light in a radius around him, his wings and halo spread wide, which will lessen the effect of the darkness to anyone within its reach. It isn't a huge area, because there is only so much he can support, but seeing the light will offer a resistance benefit to anyone close enough to bask in the glow.