Port Mafia's UA student

One

Chuuya and Dazai waited in the elevator.

Mori had summoned them just a small while ago, right after a mission.

The two Soukoku members glanced at each other; they reeked of blood. 

They nodded slightly to the guards stationed at the office door and went inside. Mori was holding a large, white envelope sealed with wax stamped from Yuuei. Dazai narrowed his eyes.
"Mori-san? You called for us?"

Mori grinned. "Dazai-kun, remember when I told you about owing a favor to someone from outside the barrier?" Dazai nodded, metaphorical gears twisting and turning in his head. He was no Ranpo, but could solve intricate and practically impossible cases and riddles if he puts his mind to it. (Just about four or five minutes slower than Ranpo, but that is always left unsaid.)

"..Is this 'someone' an important figure?" Dazai needed more leads. He didn't like not knowing something. Mori's grin stretched unnoticeably and gave the intelligence powerhouse an affirmative. Dazai frowned. For someone as sharp as he is, the Demon Prodigy isn't one to listen about anything concerning the world outside the barrier.

"Aww. Is the Mackerel having trouble?" Chuuya teased. The redhead was always the one in the receiving end of the banter, so having something to hold over Dazai's head is very much appreciated, thank you.

"Try solving it for yourself without so much of a clue about anyone from the outside, Chibi." Dazai snickered. "Oh, nevermind. Your brawny head might combust from all the thinking." Chuuya's grin turned upside down and that was all it took for Dazai to smile mockingly. "Or maybe Chibi-chan really is all brawns."

Mori sighed fondly. The daily drama shall start early, I suppose.

"Hah?! What did you say, brat?"

"I'm taller than you. And did you not hear? Ohhh, Chibi's getting old."

"Shut up! You literally act like a child!"

"Well you look like a literal child, Chibi."

"I'm fifteen and still growing, you bastard!"

"I'm fourteen and I'm already taller. Mou~ How sad."

"You-"

"You should really start drinking some milk. It might help."

"Why I oughta-"

"Now now, you two will start school after ten months. Is that really how you two will act?"

Soukoku craned their heads towards Mori. "Eh?"

The reason why this is really short is because this is also available on my Ao3 acct thingy. Just under a different name and summary. Two will be coming out once I'm done writing it in Ao3 hsjjsdjjskahdfainecdfjnksjjk