7 years after the promise or 7 years ago : 

        Even though , Baekhyun had promise Taeyeon but  still it's a complicated love . They are in two different worlds .It has been 7years already since the promise that Baekhyun made but still Taeyeon appreciate the promise that made by Baekhyun . Both of them were study at the different school , because Taeyeon was study at the public school and Baekhyun was study at Private school , One of a famous school in the country . They were both busy in study and so they couldn't meet each other much . Especially since Baekhyun came from a rich family , he had to learn  too many things so he had no time but he never forgot Taeyeon . Whenever he came to party with his family he always imagined what if Taeyeon was with him , he would always imagine Taeyeon in the beautiful dress . While Taeyeon had to help her mum's work in the house and since her mom not has too many money , she decided to work in a coffee shop near the place where her mum worked . Everyday just liked usual , both of them hadn't met each other for along time already . Until one day Baekhyun called Taeyeon called When he saw her prepared her bag to her work 
" Hey " Baekhyun asked with a smile and put his hands around her cheeks " I miss you , it's been along days already , do you miss me ?" He said as he still touched her cheeks warmly " of course , but Baek it's time for my work " Taeyeon said as she put Baekhyun's hand down from her cheeks and smile " see you later ok ?" Taeyeon said as she opened the gate .  Baekhyun couldn't do anything but to watched her gone , he decided to follow her because he knew soon he won't touch those red cheeks , hold her hand .....  Anymore , he just can't . He ran to her and hold her waist from the waist while Taeyeon was here suprise , she didn't know why but he seem like strange these day  " what's wrong ? " Taeyeon asked him as she turned to see her little boy was crying " I'm going to leave you soon " she was shocked , she couldn't see anything as she heard this statement from him  " w- what ...? I mean why ? " Taeyeon asked as she hold his hands " my dad wants me to study at London ... And I don't get any ideas " Taeyeon understands it after all , no parents