Disclaimer: I don't own Naruto or Star vs the Forces of Evil
After the Coronation things were slowly going back to normal as Naruto was so happy to have his entire family back together again as Star hoped everything turns out alright for them both but of course the happiness didn't last as Mina and the other Solarian warriors were now attacking new monster city and they all found out that the one whom was leading them was Moon, Star's own mother and even though Naruto surrendered and gave up his wand to Moon.
Mina still refused to back down and tried to kill them as Naruto and Moon and Marco and Star were saved by Hekapoo and took them to a cavern so they can hide from Mina. But Star then decided to go to the Magic Dimension where she was trying to destroy the magic by using the whispering spell. But she was having trouble but then Naruto and Moon and Meteora appears and they helped her out and together they were able to destroy the Realm of Magic.
After that they were now back in Mewni which was now fused with Earth as Naruto smiles as he watches Star and Marco kissing each other as Naruto felt sincerely happy for them. He then leans his head against his husband's shoulder as another portal appears shocking everyone as Kami comes through the portal. "Naruto it's time for you to return to your world." She tells him shocking them. "What do you mean? Why do I have to go back?" He asked her making the goddesses sigh.
"Because you need to fulfill your destiny and bring peace among the elemental nations, and to stop the corruption in Konoha." She tells him making Naruto's eyes widen as he thinks about it for a few minutes. "Alright I'll go I'm exchange I want to bring my husband and daughter with me." He tells her making Kami nod her head in understanding. "Very well, also to help you." She says and snaps her fingers and Naruto's and Meteora's cheek marks appears again and Naruto's old wand was returned to him.
After that a bright light engulfs them and when it dies down they were in the hidden Rain village. Naruto looks at the gates to said village as he knew this was just the beginning for him.
