Rae opened her eyes slowly, She was in her room. She sat up and held a hand to her head, she pulled it away including a damp cloth. She heard a soft sigh, looking to her left she saw...him.... sleeping. Cute... He opened one eye sleepily.
"You're awake?" He stretched and looked at the cloth in her hands.
"The doctor came and said we needed to bring your temp down. Key's Mother is a nurse, so he told me what to do."  He smiled at her, and her heart did a backflip inside her chest.
"What happened?" She coughed slightly. Thanking him as he handed her a glass of water.
"You went out last night, you didnt know the code, and you didnt take your phone." He looked at his phone and replied to a text, "You had a high fever and were soaked through. Our manager found you outside the door, already unconcious." Rae looked down at her clothes and then blushed.
"How....d-did..?" She pulled on the overgrown t-shirt.
"The stylist came and changed you. They are both female. Don't worry. And the t-shirt is Minhos." He glanced at his phone again. "Minho has told the others you are ok. Key nearly fainted at how pale you were." He left out a sigh of relief and rubbed his eyes, "Lay back down. You need to rest. Are you in pain anywhere?" Rae shook her head slowly but lay back down. He poured her another glass of water, "Shall i help you take your medicine?" He handed her two flu pills. she popped the into and raised her head a little so that she could drink the pills down with water,
"You seem so different from your image on stage." She to her side to talk to him.
"oh?" He rubbed the back of his neck, seemingly shy, "I guess we all are kind of different from our stage personas." He pointed towards her, "As a singer yourself, you would know too. After all, you aren't the same as you are on stage either. You're way too adorable and innocent in regular life." He smiled at her again, her blush spread over her cheeks. He leaned over and put his hand on her forehead. 
"What are you doing?" She squeaked pulling up the covers.
"Ch-checking your temp....You are rather red.. i thought your fever was coming back....."~ He blinked in shock before patting her on the head, "Rest. Minho, Key and the others will be back soon." She nodded and closed her eyes. Humming filled the room in a soft lullaby. His voice was so, beautiful, but she new it could be y, powerful and could cause all types of emotions from different tones. She smiled slightly and nuzzled back down into her covers.

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Ok so we knew it wasnt minho from the foreword. and we now know it isnt key! 
Keep guessing, and i hope you enjoy this!