Yo! I have no plan for this, so let's see where this goes! Also sticking with a T rating because I'm not risking crap.
The sandbox was peaceful. Mostly. There was an argument between two friends happening. One that would alter everything. One that would change the fate of their world as they knew it… and it was happening between two four year olds.
"C-Come on, Kacchan! I can still be a hero! Even without a quirk!" Midoriya whined, tears beginning to fill his eyes. Katsuki Bakugo growled, irritated. Small explosions popped off of his hands.
"You'll get hurt, stupid Deku! Why can't you see that?!"
"Because you'll be there to help me!" Midoriya loudly proclaimed, and Kacchan froze at that. He.. wasn't expecting that. He began to think of that. He.. could help him. If he was becoming a pro hero too, then he could work with Deku, to make sure the idiot doesn't get hurt. Of course he'd be stronger than him, but that just meant he could help him easier. Bakugo squinted at Izuku, the green haired boy still trying to hold back his tears. The ashy blonde looked away, growling again.
"Fine, stupid Deku! But I'm going to be number one, remember?!" Midoriya's eyes shined, and a smile grew on his face.
"O-Of course! Kacchan is super strong and amazing!" Midoriya cheered, but Katsuki huffed. This wasn't how he expected his day to go, but he can't say he was complaining.
"Izuku! Katsuki!"
"Tch. Looks like Auntie Inko is looking for us, nerd. Let's go." Kacchan stood up, and then offered his hand towards Midoriya. The young boy smiled brightly, and took his friend's hand, standing up before they ran over to the eldest Midoriya.
A short one, still a good one. This shall be fun (I hope). I got some ideas on what I'm gonna have happen. And uh, if you read this, then I hope you liked it (even if it WAS incredibly short for a first chapter).