With the sun rising, casting its light across the horizon, the early workers could be heard as the faint sound of cars filled the air. It was now 6 AM, and we made our way to a particular house, where a young boy with green hair lay peacefully in his bed.

"Mm~" Humming in his sleep, the boy slightly rolled to the side as something soft stopped him, though it was still warm to the touch. Still, deeply asleep, he confused it with his pillow and hugged the wall, burying his face into it. However, as the boy continued to snore, a strange sound came from the obstacle he was hugging.

"Ngh..." A faint moaning sound was heard from within the room, but as it was completely dark, it was difficult to discern what was making the noise. The boy's movement, however, caused another moan to be emitted, this one much louder than before.

As the sunlight reached the window, it illuminated the boy's face as he squinted his eyes and slowly opened them, feeling tired from the morning. His emerald eyes slowly opened, and he tried to see something, but it was still too dark in the room for him to make out any details.

"Ahn~" A muffled moan came from somewhere in the room as the boy now had his eyes fully open and wide awake. Looking around for the source of the sound, he tried to reach his nightstand, where his lamp was. Hitting the switch, the room lit up, allowing him to now see what the problem was.

He wished he hadn't seen it at this very moment.

"M-Misturi-nee?! Why are you here!!" In front of the guy was a woman that was around the same age as him. As she was stretching her tired body, the blanket hiding her upper body fell to the bed, revealing that she was naked in the bed, smiling at the boy.

Her lime green eyes were looking at him with glee; her smile only widened as she heard his voice. For a girl who was around his age, she was well-endowed and took pride in her body. Her pink hair was all messy, with the lime green tips of her hair scattered everywhere as she had taken most of her hair and tied it into a ponytail style.

"Zuku!" Jumping onto him, she hugged the boy tightly. Her chest squished under the pressure as they embraced each other. The face of the boy turned a deep shade of red; he couldn't hold back his blushing face any longer.

"You're too close, big sister! Please get off!"

"No, you worked the whole evening yesterday; do you know how lonely I was? You big meanie…" Her face close to his, he could tell that she was sincere, despite the happiness she had been portraying just moments before. He sighed, realizing he only had himself to blame for that.

"You're right, but you know why I do this." Mitsuri fell silent. She wanted to retort, but she couldn't find the words, or she didn't want to. Putting her head on his shoulder, she tightened her grip on him.

"You big dummy, you can't keep doing this alone…" Saying that in a hushed tone, she closed her eyes, enjoying the warmth of her little brother.

"Did you say something?" The boy asked, but the girl remained silent as she continued to hug him for a few minutes. He knew that she was naked and had been sleeping in the bed, but given her mood swings, it wasn't the best time for this.

'But still, she ought to stop coming and sleeping in my bed…'

After a while, Mitsuri loosened her grip and detached from him as he looked at her, a little worried.

"I'll go prepare breakfast Zuku. Take your time, we still have two hours before school starts!" Getting all giddy again, Mitsuri hopped off the bed, closing the door behind her as she walked out of the room.

Izuku looked around and stretched his body, cracking his tired muscles as he stood up from his bed. Opening the windows, he took a deep breath of fresh air, smiling as he gazed out at the streets below. People walked along them, heading to various destinations, while cars passed by.

Izuku let the window slightly open, then went into his drawer and took out a fresh uniform. Heading to his bathroom, which was connected to his room, he closed and locked the door. Now prepared for school, the view shifted to the kitchen of the house, where Mitsuri was humming a song while preparing breakfast in her school uniform.

The smell of eggs and bacon filled the room as smoke wafted through the air; however, this didn't bother the girl at all. The sound of grease popping could be heard as she concentrated on preparing breakfast. Meanwhile, the sound of light footsteps was heard, followed by two little girls in middle school uniforms who sat down at the table.

With the breakfast nearly ready, Mitsuri turned her back, only to see two familiar faces; her eyes lit up as she ran to them and hugged them both, a wide smile on her face.

"Uruha-chan! Miku-chan! Good morning!" she exclaimed, giving each girl a hug. Her enthusiasm didn't falter despite the early hour, but the moment was short-lived as the faint scent of burnt food invaded her nostrils, causing her to panic.

"Ah, the bacon!" In a moment of panic, she ran to the kitchen as the girls were giggling, looking at their carefree, yet clumsy big sister.

Then, Uruha turned to Miku with a worried face; his eyes staring at the staircase, leading upstairs.

Miku said, "Izuku-nii came home late again yesterday." Her voice was filled with concern as she watched the staircase, waiting for her brother's arrival. The sound of hasty footsteps could be heard, followed by Izuku descending the stairs, his blazer draped over one shoulder and his backpack in his other hand.

As soon as he entered the dining room, both little girls ran over to hug their beloved brother; Uruha smiled, closing her eyes as she enjoyed his warmth. Miku's eyes looked up at him, giggling and smiling at him, all giddy like the child she acted.

"Onii-chan!" Miku exclaimed cheerfully, smiling sweetly at her brother. Uruha felt left out as she tugged on his uniform, slightly pouting and looking up at him with her red eyes.

Before anything else could happen, the sound of a plate being set down beside them was heard; Mitsuri smiled, clasping her hands together.

"Let's dig in!" With a cheerful tone, everyone had a smile on their face as they sat down in their respective seats, well, Uruha didn't. She approached Izuku and jumped on his lap, as she had a satisfied smile on her face.

"U-Uruha?" Surprised by her sudden approach, Uruha's head rose up, meeting her eyes.

"Y-you know that's not your seat...?" But Uruha just shook her head and moved her body slightly, getting into a more comfortable position.

"I prefer this seat." Saying this bluntly, Izuku had no way to make her move, as the two other sisters were giggling at their little quarrel.

The siblings continued to eat as each of them enjoyed their food. A comfortable silence filled the room; a sweet aura surrounded them as they kept gobbling down their food. It wasn't long before each of them finished.

As Izuku was about to take his plate, Mitsuri softly swatted his hand away, taking it at the same moment. She had a frown on her face, but it was just adorable, more than anything. Izuku understood and sighed, knowing that she was just too stubborn to be reasoned with.

"Guess I'll get ready for school," he said, smiling at them. He then walked to the bathroom to finish his preparations, putting on his blazer as he grabbed his backpack and headed towards the door. The three sisters were waiting for him there.

As he put on his shoes, he gazed in a certain direction, where a framed photograph of a green-haired girl hung on the wall.

They're going, Mom! Closing the door behind them, the siblings walked down the street, heading to school.