After defeating Asgore... That had 9999 HP... you woke up in your room... you wore clothes same as when you were in Dream... But... you see a skeleton leying besides you... It's Sans... As he woke up... probably from sleep paralysis... as he cuddles you against his body... making you blush when... you see hsi ribcage... and his Soul in it...

Sans: Heya kiddo, did ya think that Dreams and Real Life aren't connected? Heh...

He then yawns tiredly... yet lazily... as You think to yourself

What the heck is happening?!?!

However...

Sans: Hey, don't swear in your thoughts, I can hear it too!