For the Winter King x Simon lovers because they've been going feral on tiktok-

"Please forgive me for whatever I do, when I don't remember you." You cross paths with Simon Petrikov, who has an interest in ancient artifacts. One day, he discovers a mysterious crown that would change your lives forever.

As Fionna, Cake and Simon travel through the multiverse they discover a reality at witch the "Winter King" holds the crown. As time passes the winter king takes a liking to Simon.