"Cousin Wally!" the twins shouted happily, as they zoomed to Kid Flash and gave him a big hug.

"Whoa! Hey, little cousins", said Kid Flash as he crouched down and hugged them back.

"Your Majesties, your Highness. Welcome", Aqualad said, as he greeted the King, Queen, and Princess of Atlantis.

"Thank you, Kaldur", said Aquaman.

"Thank you", said Mera.

"Hello, Kaldur", Azura said as she walked up to her best friend.

"Hello, Princess Azura."

Azura chuckled and said. "How many times do I have to tell you, Kaldur? You don't have to call me that. Just call me 'Azura'. We're best friends, remember?"

"Yes, of course. Azura".

"Athena!" Zatanna and Artemis called out, as she and her parents climbed out of Wonder Woman's invisible jet.

"Hi, Zatanna! Hey, Artemis!" Athena said. And she ran up and hugged her 2 best friends. The 3 girls have been very close friends for a long time.

"Glad you could make it", said Zatanna.

"Yeah, girl. I thought that you'd overslept", joked Artemis.

"Not a chance", Athena laughed.

"Hey, Jonny boy!" said Superboy. "Down here".

"Connor!" said Jonathan. And he flew down and gave his big brother a big super hug.

"Oof! Your super strength is getting stronger every day".

"Oh. Sorry."

Then Superman flew down and said, "Take it easy, Son. Remember what I said about controlling your powers".

"It's okay, Clark", Connor replied. "I know I'm half-human, but even this pipsqueak can't take me down".

"Oh, yeah, Connor? I'll show you SUPER strength!" said Jonathan with a smile. Then all of a sudden, Jon knocked Connor to the ground, and the 2 brothers started wrestling. But in a playful and fun way. And they were laughing as well.

"Fight, fight, fight, fight!" shouted Harry as he saw his friend play wrestle his big brother.

Suddenly, when Jonathan got distracted by Harry...

Connor pinned his little brother to the floor! "Gotcha, kiddo!"

"Hey!"

"Super hero lesson #1, Jonny: Never take your eyes off of your opponent", he said with a smile.

"Even for a millisecond", said Nightwing. Who was standing behind Connor.

And Damian, who was standing beside him agreed. "My mother and grandfather said the same thing. But when one of the opponents gets killed when he forgot that lesson".

"Do you always have to be a Debbie-downer, Robin?" asked Beast Boy. Who turned into a robin and was sitting on his head. He waved his hands around his head to shoo him away. "Whoa! Hey, hey! Dude, come on!" He flew away and transformed back into Beast Boy, and stood beside Jon.

"Yeah, Damian. Relax", said Jonathan.

"He was just being... well, Beast Boy", said Blue Beetle. Who was walking with Bumblebee.

"And there's nothing wrong with having a little fun", said Harry. "And it's like my mom always said, 'You only get to be a kid once'."

"That's right, Harry", replied Miss Martian. Who flew down and stood next to the young boy.

"Hey, guys!" Henry called out. "Are we gonna do some super hero training, or what?"

"Yeah", replied Nora. "The sooner we get started, the sooner we'll be ready to kick some bad guy butt!"

Everyone chuckled.

"Agreed, young speedsters", said Wonder Woman. "Let's get started".

And so. The Justice League prepared their children in the training rooms. And they were all set at the Beginner's level, except for Damian. Who reset his training room at the Difficulty level.

About an hour later, Jonathan's room was set to the Moderate level. The same goes for Athena's room, and Azura's.

The twins however, were still at the Beginner's level.

And Damian. He was still doing very well at the Difficulty level. On account of his professional assassin training his whole childhood.

Harry was watching his friends from behind the windows, supporting them. But inside, he wished he could be a Green Lantern, and train with his friends.

But something amazing and special will be given to him in the meantime.

But what?