After many hardships, Star became Queen of Mewni and with prince Tom of The Underworld. Merge Mewni with the Underworld and Star was now the second Queen who married a Demon to become the King of MewniWorld.
...But what about Marco?
Marco after helping Star and Tom to be King and Queen with a pained heart he let go of Star and let her marry Tom. He didn't become their Royal Chief of the Knights but instead rejected that offer and went on another journey with Hekapoo he became immortal after that he became one of the High Magic Comission known as The Unbreakable Warrior with his much stronger body than Hekapoo dimension.
He married Hekapoo, Can hangout with his best friends Star and Tom also from the support from his parents and the previous King and Queen of the newly merged MewniKingdom. He have 2 kids, 1 was already 14 years old and the other is still 2 month old and a Pet DragonCycle Nacho
And this wattpad story is about their love and effection of Diaz family...
Warning:This is just fanfiction.