Disclaimer: I don't own Phineas and Ferb. For that matter, I don't own Milo Murphy's Law, either. I also don't own any of the characters from Fire Emblem Awakening (or any FE game) that I might use in this fic. So what do I own? I own the character of James (who, for the record, is a Build 2, Hair 2 Avatar with purple hair) and I own this fan Fiction! Sit back, and enjoy.

It was a beautiful day in Povensburg, and James was sitting languidly underneath a tree in his backyard. He wore a white t-shirt below a black jacket decorated with purple stripes and ornate, and gold-colored eyes. He turned to his pet Drakopus (An extremely rare creature that resembles a turquoise platypus with Draconic features, and a reptilian tail instead of one similar to a beaver) and asked him, "So, Perry, what do you want to do today?" Perry replied with a sound that sounded halfway between a gurgle and a growl. "Quite true," James replied. He really had no idea what his pet was saying. He was primarily guessing.

A boy about James's age with blue hair and grey clothes (technically, they were closer to silver) entered the backyard through a gate in the fence and walked up to his friend.

"Hey," greeted the newcomer, whose name was Chrom.

"Hey." Chrom sat down next to James.

There was silence for a few seconds. Then, James got up and started shouting. "What are we doing!? We're wasting our summer vacation! When school starts and the teachers ask us what we did last summer, which, in the future, is this summer, won't it sound lame if we say 'we just stood around all summer'?!"

"Well, strictly speaking, I'm sitting-"

"When we're on break, life should be one big rollercoaster of excitement!" he exclaimed, continuing his rant "A good one, not like that lame one we rode at the county fair last year." Both briefly paused, as if remembering something. "Man, that was underwhelming."

Instantly, inspiration struck. "That's it! I know what we're going to do today: build the biggest, baddest, most gut-wrenching rollercoaster in the WORLD!" He began to give Chrom orders. "You tell Nowi and then take her to pick up some supplies. I'll draw up some plans!"

"Yes, sir!" Chrom replied with a salute. He sprinted next door to bring the news to the last member of their trio of friends. Meanwhile, James was rubbing his hands together in excitement. "Yes...this is going to be epic! AHAHAHAHAHA!" He started to run in circles (well, ellipses) and proceeded to crash into the tree.

"I'm going to the store," shouted Validar as he entered his car. "So behave yourselves." Validar was a tall, gaunt man with slicked back hair and a goatee. You'd be forgiven for thinking that he was evil, but thankfully, that was not the case. At least, not in this universe.

A teenaged girl with long white hair and dark skin, hearing him, ran into the driveway. She wore a dark grey skirt, a black blouse, and a frantic expression.

"I am in charge, right? You did tell them that I'm in charge?"

"Aversa, no one has to be in charge."

"But what if there's an emergency?"

"Such as?"

"What if...what if a satellite falls out of orbit, and crashes into the house?!"

"...If that happens, you're in charge."

Aversa pumped her fist and then entered her backyard. "Father says I'm in charge! Conditionally." She was confused to see her brother at a desk, with pencils, pens, and a large blue sheet of paper. "What are you doing?"

"Homework!"

"It's summer."

"You try waiting until the last second."

Aversa was not entirely satisfied, but that answer was enough...for now.

"Well, I'm watching you," she declared as she stormed inside the house.

The phone rang, and she answered it, oblivious to the sight of James greeting Chrom and Nowi (a girl with messy light green hair, a green and purple tank top, a short skirt, and a purple cape), who were pulling a large wagon of supplies.

"Hello? Oh, hi, Petrine! I'm afraid I can't come to the mall today, I'm in charge of James and his little friends. You know. Conditionally."

James, Chrom, and Nowi left and came back with a cart of toilets.

"So, I believe that Lyon smiled at me yesterday. Yes, he's the one I told you about, the cute one that works at Slushy Dog. Yes, I know. He's just so...aloof!"

James, Chrom, and Nowi left and returned with a large lion, which let off a mighty roar.

"Will you keep it down! I am trying to use the phone!" Aversa returned to her conversation.

"So Petrine, as I was saying-what's that thing in my backyard? What do you mean you can see it from your house?!" Aversa hurriedly hung up and ran outside. She couldn't believe what she was seeing. It was the start of the biggest rollercoaster she had EVER seen.