Different ~ G!Sans x GPapyrus x Child/Baby R...
Book 2, Confused.
Y/N is a small human, she comes over three of the thousands of timelines.
Y/N has forgotten all her memories and is usually in the void, chilling with Flowey.
One day Y/N comes back after everyone gives up hope.
As does Frisk. Yet he's still genocide.
Memories come to baby Y/N in her dreams, but she just thinks they are Dreams.
Baby Y/N's body and soul morph to meet up with an 18 year old Frisk. She can't control it.
It just happens. Will Frisk realise it's his Y/N or will it be too late?