A/n: Hi guys! So this is my first Osomatsu-san fanfic or , whichever you prefer. I'm hoping this fanfic will somehow spread the word about the show because boy do I love it and I wish more people in America knew about it. Anyways I got the idea for this fanfic from Chroromatsu's Totty shouldn't exist theory so I loosely based this story off of that. I own nothing.

A lone 5 year old boy dressed in nothing but a pink hoodie and jeans with a small matching backpack walked through the quiet streets of Japan. He was cold, hungry, and scared but he just kept on walking. It was for the best, his big brothers hated him anyways.

*Earlier that day*

It was Saturday which meant the Matsuno brothers were going to be sleeping in, all except one. His name was Todomatsu, he was the youngest of the brothers and the baby of the family. He was only 5 and because of this tended to get up early. He rubbed his eye and stretched as he got up from the mat on the floor the brothers used as a bed.

As he was moving he noticed his spot felt...wet. Once he was fully up he noticed a wet spot on his part of the mat, right between his two eldest brothers. Todomatsu looks down at his pajama pants and noticed a wet spot. Not again.

Todomatsu felt tears prick his eyes. That was the third time this week. Todomatsu crawled over to Karamatsu and shook him away.

"Totty? What is it?" Karamatsu asked in a groggy voice. Karamatsu was 21 years old and the second oldest. He was also believe or not the softest when it came to kids so Todomatsu knew he was the least likely to get mad at him for wetting the bed again.

"I-um...I-" Todomatsu stopped as tears started to stream down his face.

That was all it took for Karamatsu to know what his youngest brother was talking about.

"Hey it's okay," He cooed as he rubbed his brothers head in a soothing manner.

Karamatsu got up and took Todomatsu's hand and led him to the bathroom. Totty sat on the toilet seat while his brother got a bath ready. Once the tub was filled Karamatsu helped his baby brother undress before placing him in the tub.

"You wash up while I try to access the damage okay," Karamatsu said.

Todomatsu nodded and Karamatsu left and walked back towards the shared room. When he got back to the room he saw that everyone except for the Ichimatsu was awake.

"Let me guess, Totty had a accident?" Osomatsu asked.

Karamatsu nodded as he pulled back the blankets to see how bad it was.

Osomatsu was the oldest brother at 24 years old. His mother died shortly after giving birth to his youngest brother and not long after that their father died of a broken heart. Osomatsu had to get a job and try to raise his brothers at the same time. Luckily for him not long after Karamatsu graduated high school and was able to help him raise the little ones and get a job as well. Choromatsu was 16 and the smartest out of the group. He also acted like he was the most responsible and a lot of times chided Osomatsu and Karamatsu for acting childish or getting drunk. The one still asleep, Ichimatsu was 13 years old and as Osomatsu put it, "going through his emo phase". Ichimatsu was the calmest of the brothers and the darkest. He really was a nice guy however and had a fondness for cats. Lastly was Jyushimatsu the most hyper of the six. He was 7 years old and just a ball of energy. He was also almost always happy. It look a lot to make the guy upset.

"Totty, potty!" Juushimatsu cheered happily.

Once Karamatsu was able to lift the blanket up without waking Ichimatsu he peeked to see how bad it was. Before he could get a glimpse at it though Ichimatsu rolled over and ended up landing on the wet spot.

The four brothers eyes widened. Ichi wasn't going to be happy when he woke up. Just then Ichimatsu woke up. Everyone stared at him wide eyed.

"What?"

Everyone was silent before Jyushimatsu decided to happily cry out, "Potty!"

"Jyushimatsu!" Choromatsu snapped angrily.

Ichimatsu was silent for a moment before he shot up and onto his feet.

"Where is he?" He asked in a calm voice. It was too calm.

"Ichimatsu think about this, he's only five," Osomatsu said.

"Where. Is. He."

Before anyone else could speak the 5 year old Ichimatsu was looking for tottled into the room with a big towel wrapped around him like a blanket. Once Ichimatsu set eyes on him Todomatsu knew he was in trouble. He lunged for Todomatsu, who in response dodged and ran straight into Osomatsu sobbing while Karamatsu and Choromatsu held their younger brother back.

"Calm down Ichimatsu, he's only 5! He didn't mean it!" Choromatsu scolded as him and Karamatsu continued to restrain the young teen from mauling their youngest brother.

"Ichimatsu your so moody," Osomatsu said as he held in little brother in his arms and rubbing his back in an attempt to calm him down.

"I'm really sorry," Todomatsu whimpered.

This seemed to work because Ichimatsu stopped struggling, "Whatever," He huffed angrily as the two older brothers loosened their grip.

"...Potty!" Jyushimatsu yelled out happily.

Ichimatsu was about to lunge for the second youngest not but once again was restrained by his brothers. Osomatsu frowned as Totty hid his face in the crook of his neck out of fear.

'Why do I have a feeling today gonna be a long day?'

A/n: Done! This is going to be a chapter mini series. That way I can crank out of one chapter per day or any other day. I was originally going to make this a one-shot but realized I needed more time. So what do you think? Sorry if some of the characters were out a character I'm still testing the waters with this fanfic. Anyways see you guys later