Kim Taeyeon;

The girl who has been seeking for love. Seeking for a guy who she can spend her entire life with. Her hopes are up. That she will be happy with him and will die together with him. But all she got after the sudden broke up with whom she thought the right guy for her, is a lovesick.

She never want to happen it again. Nor find another guy that will just break her heart and rip it into pieces. What she want is just to focus on her works and make her fans happy. But everyday seeing her sisters who already have their only guy to spend with, even her baby maknae, she knows that she need to find her love, her happiness. Because love will be her sick and love will be her medicine. 

-I never know that age will be the hindrance of our relationship. Now, knowing it, I will never believe in 'Age doesn't matter ' again.

 Oh Sehun;

He is just innocent as kid. Not knowing about what love is. All he know is, Love is just for a couple. Until he met this girl who stole his heart. Learning how to love, he knows that he will forever cherish this girl. That this girl will be his life, his girl that he will spend his life and time to be with. Soon after, he didn't know what have got to him. Letting his girl find her way out from his love and extricating her from his cabin. He remembers how he hurts her and give pain  to her.

He doesn't want it nor wish for it. But seeing how much their , he feels uncomfortable and disappointed. He just hopes that the girl he love before will find her happiness. Not with him. Seeing her interacting with his other hyungs, he feels stingy of jealous. Call him idiot but it's true. Realizing what's happening to him, all he can do was to wish for a replay of their love story.

-Noona, I know I hurt you so much. But please, I'm asking for a replay. Could you give me another chance again?

Prologue;

     "I'm sorry" He said, facing her back. The girl smile at him and patted his head. "For what?" She asked, happiness is written all over her face. You can't even notice her tired looks and pale face because of her works. "Noona, sorry to do this to you, but I can't hold it anymore. Seeing how my hyungs tease me for getting a girl who is 4 years older than me, it...it makes me embarrass of myself. Sorry noona, but I'm asking for a break up." He exclaim, tears strolling down from his eyes, he don't know that it'll be hard for him, to let go of this woman. " Are you serious? " The girl asked. The pain can be heard in her voice yet she still hold back her tears. " I'm sorry. " All he can say is just a simple sorry and nothing more. Seeing the boy in front of her with those tears uncontrollably flowing down, she made her way closer to him. Raising her hand up, he expect her to give him a painful slap which he deserves but what she did was to cup his face in her small hands and wipe the tears away. " Don't cry. I understand you. You don't need to waste your tears for me. I know what you feel.Don't worry, I'll give everything for you even though it pains me." She said as a single tear slide from her face. " Noona, I..." " Shh. Don't talk. Go away now. Your members are already waiting for you. I want to see you as a successful man. Noona has a work too." She said and patted his cheek. "Go" She whispers, loudly enough for him to heard it. He smile lightly and nodded his head before turning his back. " Sehun..." Hearing a voice calling him, he turn around to find his girl crying. " I will miss you. " He walk back to her and hug her tight. " Me too." He said. The girl pulled away and cupped his face again. " Can you accept my little gift? " She asked and the boy vigorously nodded his head. The girl tiptoe and reach for his lips before giving it a simple yet passionate kiss. " Thank you for everything. Please make your life happy, for you and for me. I'll go now. " The girl gave him a peck on his lips before turning around and walk away from him. " Thank you for everything too... Taeyeon noona."