In the middle of an adventure to save Pop Star, Kirby and his new friends travel to the Divine Terminus to prevent the Jamba Heart from being reconstructed by Hyness and his generals. However, one of Kirby's allies makes a mistake, and suddenly, Kirby, his other two friends, and the evil Hyness find themselves in an unknown world. Equestria is suddenly threatened by Hyness, and the Star Allies must stop him. After that, lunch and a nap!
By the way, this is based on a fanfiction that I wrote and so will involve an original character or two. Some well-known characters will be mentioned but otherwise never appear. I intend to post the aforementioned fanfiction later, so be on the lookout!
This story begins on March 16, 2018, the day that Kirby Star Allies came out, and also after the season 8 premiere of MLP:FiM. I know the premiere was later, on March 24, but remember that it took place directly after the events of My Little Pony: The Movie, which was in November.
I do not own Kirby, Pokemon, or My Little Pony.
Edit: I have now published a rewrite of this story. You can find it here.