A Blueberry Daydream

You lack presence, you're consistently unnoticed as you go about your day, and even though
you act friendly, you're forgotten the moment you're out of sight. Underswap Sans notices
you, and brings you into his friend group, constantly forcing them to notice your presence.
You're shy, but Sans encourages you to enjoy yourself more, creating a comfy positive
environment you can relax in. Also, lots of hugs and cuddles.

Started as a secret fic exchange, now made into a full story. Originally posted on AO3