In the second year student's classroom, Yuya and Shotaro were sitting in their seats.

"It's just not fair!" Shotaro whined in his seat.

"What is it, Torii?" Yuya turned his head around to his friend.

"Why can't I have a sister like Mitsuki-chan? You always get the best of every damn thing don't you, Yuya?" Shotaro pointed at Yuya angrily.

"Not this again…" Yuya groaned, turning back around in his seat.

"Can I please borrow your little sister?" the brunette pleaded.

"No." Yuya answered back.

"Pleeeeeeeease? Just for a week?" Shotaro pressed even further.

He had a little sister too, but Moa Torii was blood related to him. Hell, she even picked on him too! It was kind of understanding, with Shotaro's character and personality.

"I SAID NO!" Yuya shouted.

Shotaro was shocked, Yuya had never snapped at him before.

"S-Sorry, Yuya, I didn't mean to make you a-angry…" Shotaro whispered.

"It's fine… It's not entirely my choice you know?" Yuya hung his head.

"What?" his friend asked.

"Mitsuki… has a kind of sharp attitude. She told me that it's how she usually is, and all that." Yuya explained.

"Yuya, tell me all you know about Mitsuki-chan!" Shotaro commanded.

"Well, I'd have to ask her if it's okay if I talked about her. Hold on." the navy blue eyed boy shrugged.

He took out his iPhone 5, and texted Mitsuki a message that read: "Hey, is it okay if I tell Torii about you, because he wants to know?" he hit 'send' and the message was sent to Mitsuki's iPhone 5.

Meanwhile, Mitsuki was getting her gym uniform on. She heard a little bubble sound come from the pocket of her school uniform.

"Huh?"

She reached for her phone, and saw that she received a text message from Yuya.

"Hey, Hiyori, look." Mitsuki said to the ghost who was floating on her back.

Hiyori turned over to see the text message from Yuya. Mitsuki read it, and was a little surprised.

"Why would that Shotaro Torii guy want to know about you, Mitsuki?" Hiyori inquired.

"I don't know… I'll text him back and ask." Mitsuki answered.

She texted Yuya a message back that read: "Why does he want to know?" She hit 'Send'

Yuya's iPhone buzzed. He picked it up and opened up his message inbox.

"Huh?" he said after reading the message.

He turned around to look at Shotaro.

"She wants to know why you want to know." Yuya said to his friend.

"I'm just curious about Mitsuki-chan. I want to know more about her." Shotaro explained to the navy blue haired boy.

"Okay, I'll tell her that." Yuya answered back with a nod.

Mitsuki had just finished Gym Class and changed back into her school uniform.

"Wow! You actually got 2nd place in the Free Race, Mitsuki-san! And you did it without any help from me!" Hiyori exclaimed, flying around merrily.

"Yeah, I'm actually surprised." the magenta-eyed girl nodded.

Mitsuki had never really been all that good at sports, but ever since Hiyori showed up, she hadn't really minded them.

Suddenly, Mitsuki heard a buzzing.

"Huh? What was that?" the magenta-eyed girl wondered.

Hustling around in the pocket of her uniform for her iPhone 5, Hiyori was just floating carelessly around in circles.

'Hiyori-chan's no help at all!' Mitsuki thought angrily.

Finally, Mitsuki had found her phone!

"Ha! Found it!" she declared.

Going into her messages, Mitsuki saw a new text message from Yuya.

"Hey, Hiyori-chan. Look at this." the young girl said, getting the angel's attention.

Turning herself over, Hiyori looked over at Mitsuki's phone. "It's a text from Yuya Onii-chan! What does he want?" the ghost girl wondered.

"I don't know. Let's read the text and find out." Mitsuki replied.

Touching the text, the two girls started to read in sync.

"Torii wants to know more about you because he's curious. Can I tell him about your past, please?"

Mitsuki's magenta coloured eyes shrunk a little then grew again.

"Isn't Torii that guy who has quite the little sister that calls him baldy?" Hiyori asked, "The one who's always hanging out with Onii-chan?"

Mitsuki nodded. Mitsuki didn't know how to react to this question. Her mother had always told her not to go around telling everyone everything about anything, but Shotaro wasn't really a stranger. Even though she didn't really know much about him. All she knew about him was that she was a friend of Yuya's, he had a little sister, he read gravure magazines, and… yeah that was pretty much it! With a few exceptions, of course.

"Well, Mitsuki-san, what do you say?" Hiyori wondered.

Mitsuki shifted her magenta eyes from her phone screen to the floating ghost girl.

"Well… I don't know…" she hesitated.

"Well, what have you got to lose?" Hiyori asked.

Hiyori made a good point.

"Well… okay." Mitsuki nodded.

Mitsuki quickly typed in: Sure, just don't say anything that'll embarrass me! She hit 'send'.

Meanwhile… With Yuya and Shotaro…

Yuya heard his phone vibrate and opened up his messages. Reading the text, Yuya chuckled a bit.

He texted back: I won't. Thanks Mitsuki! And he hit send.

Putting his phone away, Yuya turned to face Shotaro.

"Well?" the olive green eyed boy asked, leaning forward.

"She said yes." Yuya replied.

Shotaro smiled happily.

"So, Mitsuki told me that her biological father was a complete and total scumbag that beat her and her mother. He also gambled." Yuya explained.

Shotaro's eyes shrunk a little and he gasped.

"Eventually, he hooked up with some young girl at work, so her parents divorced. After having his way with them, he tossed them out like trash." the navy blue haired boy continued.

"That's horrible! Poor Mitsuki-chan!" Shotaro cried out in sorrow.

Yuya nodded.

"So,Yuya, I know you're probably going to say no, but I'm going to make you a deal." Shotaro offered.

Yuya raised his eyebrows questioningly.

"Deal? What kind of deal?" the navy blue haired boy wondered.

"If you can convince Mitsuki-chan to swap places with my sister, just for a week, then I'll see what it's like to have a real little sister!" Shotaro explained.

"But what about Moa-chan?" Yuya inquired.

Shotaro grinned.

"You can have my sister for the week!" he exclaimed with a bright wide smile.

"Well… I'd have to ask Mitsuki." Yuya answered.

"Okay" Shotaro replied.

Later…

Mitsuki was walking home with Yuya.

"So, Mitsuki?" Yuya started up.

The magenta-eyed girl turned her head, "Yes, Onii-chan?"

Yuya rubbed the back of his head.

"Well, you know my friend Torii?" he asked, and Mitsuki nodded.

"He was wondering if… you wanted to… swap places with his little sister Moa-chan for… say, a week?" the navy blue haired boy murmured.

Mitsuki halted.

"He asked me to do that once, but I said no." she explained.

Yuya sighed.

"I just thought that maybe, you wanted a break from me?" he suggested.

Mitsuki looked shocked!

Ta-da! Cliffhanger!

Hiyori: You parasite…

Shut up!