Starmyu oneshots

Tatsumi Rui x reader Breathless music

I'll be using the song 'Honto no Oto' by Kokia.
"Rui chan!" A little girl with (h/c) hair came running into 5 year old Tatsumi's hospital room.
"(Y-y/n) chan?!" The blonde little boy looked at her with shock.
"What are you doing here? You know you shouldn't be sneaking out from your room." The boy warned.
"Aw, but Rui chan, you know what it's like to be cooped up in a room-" (y/n) was cut off as she was thrown in a coughing fit.
"(Y/n) chan!" Tatsumi held on to the weak girl's arms to support her.
"I'm ok." (Y/n) finished, flashing a smile.
"Look it's my breathe is already making it hard for you breath." Tatsumi's face wore a sad mask.
"It's ok Rui chan." You shouldn't worry."
"I should! My breath can kill you!" The boy screamed. (Y/n) had cystic fibrosis, that mean't her air passage ways could easily be contaminated, and she could go into total lung failure.
"B-but I wanted to see you dance..." (Y/n) trailed off, "I like watching dance Rui chan." (Y/n) hugged her dearest friend, ignoring the pain in her chest.
"(Y/n)...you'll see me dance again I promise." Tatsumi smiled gently.
"Promise?" (Y/n) asked, looking into Tatsumi's sea green eyes.
"Promise."
"Then I'll sing for you as you dance." The little girl smiled.
"(Y/n) you know you can't. It'll be hard for you."
"No it won't! I'll do it, just you watch. I promise you one day that I'll sing for you. Breath or no breath." (Y/n) argued.
"Fine fine, I'll see you sing." Just as they pinkie promised (y/n) started to have another coughing fit, but it was worse. She collapsed on the ground, and coughed louder.
"(L/n) san!" Nurses came running in to see the struggling little girl.
"(Y/n)!" Tatsumi tried to run after her, but another nurse stopped him.
"You can't go with her Tatsumi san. Her lungs are already contaminated enough. Plus you need to rest up, you can go home soon if you do." The nurse tucked him back into his bed. A couple hours later word went around the hospital saying that (y/n) went into total lung failure, and was in a comatose state. They weren't sure if she was going to make it. When Tatsumi's mom told him the 5 year old went into hysterics.
"It's all my fault (y/n) is like this mom. I let her be with me for too long. Now I can't keep her promise." He cried as he mother hugged him.
"Oh Rui, it wasn't your fault. Things like this can happen any time to people who have the same thing like (y/n). You didn't know." His mother did everything she could to comfort him. Like that nurse had promised he got to leave the hospital, but he still had to stay home, due to his weak body. Tatsumi wanted to say bye to (y/n), but she was still in a coma for 4 weeks.
Well, eventually (y/n) woke up, everything felt serene at first.
"(Y/n)!" Her mother leapt to her feet and hugged her daughter.
"It's ok mama, I was only asleep." The CF patient said.
"No you weren't." Her father said walking into the room.
"(Y/n), you've been asleep for almost 5 week now."
'5 weeks?' (Y/n) thought to herself, where was Tatsumi? He should be here, (y/n) scanned the room to look for her friend.
"Where's Rui chan?" She asked her parents.
"Oh...well, the hospital discharged him. He'a ay home (y/n)." When her parents gave her the news (y/n) was about to break into tears.
"B-but he said he would dance for me." Tears fell from the little girl's eyes as she got progressively louder, using her lungs.
"(Y-y/n)! Calm down sweetie, you can't use your lungs like this you won't be able to breath." (Y/n)'s mom tried to calm her down as her father went to find someone for help.
~To the present~
Tatsumi wanted to keep the promise he had made to (y/n) so he kept practicing and practicing, hoping that one day she'll see him dance on tv.
"Good morning." Hiragi came walking through the door of their practice to room.
"So today you'll be doing a dress rehearsal, at the stage you'll be performing on, but I think there will be someone else practicing, so we'll have to wait till their done." Hiragi read the details off of his paper.
"But I don't want to wait for the stage." Ugawa complained, as he stomped his feet.
"But we do, apparently the one who's practicing is some person the goes by 'Breathless Songbird', she apparently a big deal." Hiragi continued to read the paper.
"Breathless Songbird huh?" Sawatari began to ponder, "I wonder what makes her special."
"I guess we'll have to see huh?" Tatsumi shrugged. When the boys walk towards the stage there was a girl playing a piano, but she wasn't singing. She had (h/l) (h/c) hair styled in (hair style of choice).
"Wait so this she is this 'big deal'?" Ugawa asked, "She's not even singing." But boy was her wrong. The girl leaned in to her mike and opened her mouth.
"Kakko tsukeru shika nai you na arisama de
Sore demo kono mama sabitsuku yori wa ii." Her voice rang out, it was a bit deep and operatic. Team Hiragi was blown out of the water from this sudden powerful voice she had.
"Hontou no oto wo kikasete hoshii no
Ja nai to   kono sekai wa...
Nanimo ka mo ga esoragoto no you
Kokoro ni hibiku   hisshi na mono wo misete." Her voiced carried out into the room, Tatsumi loved the sound of her voice and just couldn't get enough of it. The music flowed down, as she played the last few notes.
"Hontou no oto wo kikasete..." Her crew applauded for her as she got up from the tool she sat on. When she got up the start team noticed that beside was her bag, and from that bag was a tube, that then had a nasal cannula attached to the girl's face. She had issues with breathing.
"Hey do you know what's that girl's condition is?" Toraishi asked Sawatari, who only gave a nod.
"She's got breathing issues."  Tatsumi answered the question he was eavesdropping on.
"What?" Sawatari and Toraishi looked at the blonde haired dancer. "Then how could she sing?" Toraishi asked.
"I'm not sure. I could ask her though." Tatsumi said, walking towards the stage to where the girl with (h/c) haired was standing.
"Excuse me, but can I ask you how can you see with your condition?" Tatsumi asked the girl, and she turned around to look at him. Her (e/c) seemed so familiar to him, when she stared into his sea like eyes her eyes widened.
"Oh...I've been training my lungs for a while now. It's hard at first, but if I just trust myself I can find my voice and sing." She smiled at her answer.
"I see," Tatsumi nodded, "and what's your name?" He asked. She only smiled at him in response.
"You don't remember me Rui chan?" She asked.
"Oh my god, (y/n) is that you?" Tatsumi asked, remembering that the only person who called him that was his childhood. (Y/n) only nodded.
"Oh my god you're ok." Tatsumi pulled (y/n) into a big hug.
"Of course I'm ok. I wasn't going to let our promise go down." (Y/n) smiled.
"Oh yeah...I've actually been working on that promise. I'm in a performing arts academy, learning how to perform just for you." Tatsumi rubbed the back of his head. (Y/n)'s cheeks started to race with red.
"W-wait really?"
"Of course." Tatsumi flashed a gentle smile.
"But I got to let you meet my teammates. They want to know about you."
"Wait really?" (Y/n) placed her oxygen bag down, and clapped her hands together in happiness. Tatsumi motioned his friends to come over, and they ran to the stage.
"Guys, this (l/n) (y/n), and she has cystic fibrosis." Tatsumi paused to let (y/n) explain her condition since she knew about it.
"It's true. Cystic fibrosis makes other people with it have issues in breathing, so singing especially is very hard, but I want to break through the barrier, and be able to sing with CF, and so that's why I'm Breathless Songbird." (Y/n) smiled. After that team Hiragi introduced them selves to her, and they invited her to watch them practice. They moved with such grace, and precision that (y/n) was amazed. She was overjoyed to see Tatsumi dance since she knew he loved to dance, but it was hard to do physical activities with his condition. When the ended in their end pose (y/n) started to clap with the rest of the on lookers. Tatsumi ran to her breathless, and (y/n) had a goofy grin plastered on her face.
"That was great Rui chan, I knew you could do it." (Y/n) grabbed Tatsumi, squeezing him into a hug.
"(Y/n)!" The blonde yelped from embarrassment.
"What?" (Y/n) complained.
"N-no it's nothing." Tatsumi turned away.
'So cute!' (Y/n) thought.
"Hey Rui chan...I was thinking..." (Y/n) trailed off.
"What was it?"
"Maybe you'd like to go on a date with me?" (Y/n) asked, trying to look as brave as she could.
"Eeehhh?!" Tatsumi exclaimed, "Bur I was supposed to ask you out." He sulked a bit.
"Haha, Tatsumi just got asked out!" Toraishi laughed from the back ground.