(Or drabbles in which Reborn ages normally, is now a 'teenager', and the others baby him.)

Reborn was forty-five years old when Nana told him to attend school.

"At your age, kids are in their last year of middle school," she said while folding a blanket. "You're fifteen already and you haven't been to school once."

Reborn slowly blinked and tried to comprehend her logic. Has she forgotten he was hired to be her son's tutor? It has been ten years, after all. "I don't need to go to school."

"Every child needs and deserves to go to school, Reborn."

"I'm not a child, Mama."

"See, you're already in your rebellious phase. Tsu-kun was more docile back then." Nana crossed her arms. "I already did the paperwork and got your uniform, which I put in your closet. You'll attend Namimori Middle starting next week. I'm sure Lambo will be happy to have you with him."

Reborn was tempted to break his promise with the Sawada men and tell Nana everything about the mafia.

True to her word, he found the standard yellow blazer and brown trousers in his room. He pinched the bridge of his nose, deciding it was time to head back to Italy. After Tsuna officially inherited the title of Vongola Decimo, he moved to Italy along with some of the guardians. Even though he would go there for business, Reborn decided to stay in Japan as means of vacation.

Attending middle school for the second time wasn't a vacation.

There was a knock on his door and a familiar voice called out, "Reborn?"

Ungraciously, he opened the door and immediately hissed, "You better fix this, Tsuna. I'm going back to Italy." Tsuna, wearing a plain red shirt and casual jeans, closed the door once he entered. He cursed that his student had become taller than he was in his current state.

Neither spoke, and Tsuna impassively stared at Reborn before his face warped and chuckles escaped from his lips, gradually progressing to boisterous laughter. "Oh, my god, Reborn. Imagine you in school."

He became quiet when Reborn pulled out his gun.

\

Nana didn't and wouldn't yield. Now, Reborn found himself in his school uniform, staring at Tsuna and Lambo across the dining table as they ate breakfast together.

"You look so handsome in your uniform," cooed Nana. "I'm sure the girls would love you, but remember to focus on your studies first."

"I'll make sure he does, Mama," said Lambo, a smirk annoyingly plastered on his face, which faded the instant Reborn glared at him.

At her word, they walked to school together, and by that Reborn interpreted it as to kick Lambo unconscious and head to school alone.

\

It was two weeks in his school life when Tsuna asked it for the first time. Reborn had thrown him out of the window and it was the first time in years wherein he heard his famous shriek again.

Tsuna had decided to stay in the Sawada household again after Nana's pestering to help with Reborn's schooling, much to Lambo's annoyance as he had been using Tsuna's room for his own. His room became cluttered with paperwork and day by day Vongola messengers would come to the house to deliver more.

Tsuna should focus on his own paperwork, not with helping Reborn in his homework. How dare he even ask if he needed help. Sure Tsuna had been helping Lambo with his, but he didn't need to project his brotherly instincts on Lambo towards him.

The second time he threw Tsuna out was when Reborn was sprawled on the sofa, watching television after coming home from school. He was still in his school uniform, fedora casually slanted on his head.

"You have exams soon, Reborn. Shouldn't you be studying?"

Reborn wasn't happy that his student was beginning to get used to seeing him in a school uniform.

Note: Just setting things up.