Sunset's Misadventures in the Multiverse: vol #1: Journey to the Potterverse

"Well Sunset?" asked the Sun Princess. "Aren't you going to introduce us to your new friends?" This had the effect of Sunset giving a nervous laugh.
"H-hey Mom, long time no see." She, then pointed to the bushy-maned Unicorn filly to her right.
"This is Hermione Potter, nee Granger, and on the bed is Hadrian, or Harry for short, Potter...............................my son. Harry, Hermione, allow me to introduce the rulers of Equestria, their Royal Majesties, Princess Celestia of the Day, and Princess Luna of the Night." Hermione went to give a bow.................................only to fall flat on her face. Harry however merely dipped his head in respect to the two monarchs. Princess Celestia tittered a bit at the bushy-maned Unicorn filly, while Princess Luna merely shook her head in disapproval of her sister's antics.

"'Tis truly an honour to greet the son of Our-MY niece, Sunset Shimmer, young Hadrian. Not to mention your Lady. We are Luna, Princess of the Night, Bringer of the Moon, and Guardian of Dreams." said Princess Luna, remarkably WITHOUT using the R.C.V. "Though you can call us Auntie." At last, the mysterious colt who's been plaguing the Crusaders' dreams, and may I say he is a handsome one at that.
"Pleased to meet you too, Auntie Luna." said Harry. "And, um, th-thanks for the compliment."
This alarmed Luna slightly, yet she kept her warm persona in place. Wait, I did not say that last bit out loud. How did he-wait could he be...... while Celestia was thinking, Just like his grandfather. I can't wait until he starts his training. Harry picked up on this, which made him wonder just who his grandfather is.
"I have a grandfather? Who is it?" he asked his Grandma Tia.
"As a good friend of mine would say, 'a good question for another time.'" Princess Celestia deflected.

Harry thought back to what his Aunt said about his fiances. He already had Hermione as his girl-filly-friend and thought that would be it, so he decided to ask his mum about it.
"Mum? Aunt Fire Lily said something about me having fiances, is this true?" he asked.
"Well, actually, that's something I want to talk to you and Hermione about." Sunset said. "You see, Hermione told me about your first kiss and how there was a gold and silver flash of light surrounding you two. Those flashes signify a Soul Bond. Soul Bonds are what we consider 'matches made in Heaven' thus making them the strongest marriage bonds in existence." she explained.
"S-so, you mean?" Harry asked, in shock at what he was hearing.
"Yes, Harry. You, and Hermione, are, in the eyes of Magic, married." Sunset confirmed.

This threw Harry for a loop. Him and Hermione? Married?! Not to mention there was the whole fiances thing to worry about. "As to the 'fiances' things, you might want to talk to your Aunt Luna about that." Sunset continued. However, Princess Luna had other plans.
"As much as We-I'd like to dear niece, I'm afraid I'm needed elsewhere." And with that, the Princess of the Night left the hospital to see to a certain red-headed garbage disposal. Hopefully, We can turn him from his current path, before he is forever lost to the darkness.