My Steps Into: My Little Pony, Friendship Is Magic

Prologue: Aiden, Hana, and Xavier are three friends that stepped into a mystical portal from the Human Realm, throwing them into the universe of "The Owl House". They managed to escape, and enter a new portal, transporting them to this new universe. However, this time, they wouldn't be standing next to each other...
(Author's Note: You don't have to have read the previous story to understand this one! Very few references will be made!)
Falling through dimensions, the trio that once took on the realm of The Owl House and faced the many dangers of The Boiling Isles have now come to find themselves in another strange world... with mares, colts, magic and monsters, where have our friends landed?

The Main Trio:
15 year old Aiden, from the US, who started to recover from his mental struggles is now facing an entirely new world. He doesn't realize what he's been thrown into...

16 year old Xavier, from Australia, with ADHD, has come a long way in his life and always did his best to support his friends. Little does he know how useful that would turn out to be...

15 year old Hana, from Japan, who likes to avoid conflict and keeps to herself from time to time, has a small, newfound confidence in herself, but it will be put to the test...

TLDR: Three friends from the Earth dimension fell into a portal that is making them travel through dimensions, and as they try to get home, they've found themselves in the world of My Little Pony.