Elementary School
When you first started elementary school, you wore a nice uniform and your hair was tied into twin tails.
As you walked out of the house, together with your parents, to go to school together, Tsuna and mama came out as well!
"Tsuna!" You exclaimed, running over and grabbing his hand.
The both of you holding hands as you walked to school together, both of your parents trailing behind and giving directions when needed.
Upon reaching the school gate, both of you waved goodbye to your respective parents and walked in together.
Both of you were early, and were in the same class too!
You sat next Tsuna in class as you waited, together with the other students, for the teacher to come in.

From then onwards, you would go over to Tsuna's and do your homework with him. Sometimes, he would suggest going over to your house instead.
As the weeks progressed, both of you alternated between both of your houses. They were very close to each other anyway.

Tsuna wasn't very good with his homework, so you always helped him with it. You, on the other hand, managed to grasp the concepts and learn pretty fast.
To you, homework wasn't so hard.
To him, he needed your help to finish it.

Instead of 'play dates' it had now become a routine to do your homework together. In fact, the both of you did almost everything together.
You went to school together, ate lunch together, and sat in class together, walked back home together, did homework together, played together and watched animes together.

Needless to say, both of you were very close to each other. Closer than just friends, you were best friends.

One day during lunch time, both of you were eating your own lunches which your respective mothers had prepared.
Suddenly, a few guys popped out of nowhere.
"(Your name), come and hang out with us instead, stop hanging out with Dame-Tsuna. He's a loser, and stupid." One of them demanded.
You just looked at them, scoffed and went back to eating. Tsuna just felt insulted and stared at his lunch box.
"Oi, don't ignore us!" Another one of the boys demanded.
You just kept ignoring them.
Tsuna tugged your sleeve and pointed shakily at them.
You sighed.
"Alright, for Tsuna's sake I'll talk to you. Now please go away because I don't like you guys." You said with distaste.
They seemed to be shocked when you said that.
Then, they tried to intimidate you. It wasn't working on you, but Tsuna was really affected and cowered in fear.
"Tsuna, remember what Master Gorah's fist tip was?" You asked, prompting him to recall one of your favorite animes.
"To have confidence and not waver in front of enemies." He recalled.
"Yes, that's right. So we can't waver right now, can we? We need to follow Master Gorah's tips." You said firmly.
"Ah, hai (yes)." He said, trying to ignore the demanding and rude boys.
He stopped shaking, but it was clear that he was still quite scared.
You sighed again.
"Can you guys just go away already?" You asked, quite exasperated.
"Not until you come with us."
"Look man, we don't care. Just go away, or I'll kick you where the sun doesn't shine." You threatened. [A/N: You know some basic self-defense.]
"Heh, and where would that be? Your face?" One of them taunted.
"That is the worst comeback ever."
You then proceeded to kick him where the sun didn't shine.
The boy crumbled onto the ground in pain while the rest dragged him away, afraid of you.
"Hn, that'll show them." You said, contented.
"You should have gone easy on him." Tsuna commented.
"Yeah, but they needed to stop. And they were annoying and rude." You fired back.
"Aren't I annoying as well?" He asked.
You sighed, "You are."

He flinched.

"But, at least you're not as bad as them. Also, you're annoying sometimes. Only sometimes." You added.
He sighed in relief as you got back to your seat and continued to eat your lunch.

That was the day when your friendship grew even stronger.