FLASH BACK 

The second of may is The first day of the high school for taeyeon  Taeyeon is a smart boy who wears glasses and sit in front of the teacher and all the teachers love him the ones who sit beside him are yul and sooyoung  The year go so fast and his geography teacher was pregnant and give born for her baby before the school finishes in three months so they should have a new one taeyeon didn't know the geography teachers but he heard there were beautiful and all the school in love with them , taeyeon was sitting between yul and sooyoung so he hear all their conversations  " psss yul who do you think will be our new teacher?" Sooyoung swid " I hope it will be Jessica or Tiffany but Tiffany get angry a lot so i hope it will be Jessica "yul said " yeah i hope so cause Jessica will let us sleep on her class " sooyoung said " why what wrong with teacher Tiffany ?" Taeyeon ask them " umm she's beautiful but she always get angry at us " yul said  " ah " taeyeon said  When the door open Tiffany appear and she walk until she was in front of them it she was beautiful and stylish and every one adore her but it wasn't a good day for her she had 5 classes and this the 6th  " good morning all , i will be your new geography teacher i hope this class will be good for me and for you , first my name is Tiffany and now everyone will tell me his name lets start from there " They start their class and taeyeon wasn't feeling well  " you tell me your name?" Tiffany said " taeyeon " " okay taeyeon tell me what I said just now " " um I didn't was with you really "  " does I teach my self her taeyeon I'm not standing for 45 minutes for my self , stand up until the bell ring " It was the first time taeyeon stand up in front of his classmates he really get angry  When the bell ring and she get out he sit down  " don't be sad buddy she didn't know you yet you are the first one in our class " yul said  Taeyeon stay quiet  Every time they have geography lesson taeyeon stay quiet and don't rise his hands even he know the answer ' its just two months and i will never see teacher Tiffany again ' taeyeon think  The two months finish and taeyeon finally free from the geography lesson    THE SECOND YEAR FROM THE HIGH SCHOOL  Yul and sooyoung be friends with taeyeon on the summer vacation today is their first day they were very excited  " hi buddy where is sooyoung " Yul said to taeyeon  " I don't know maybe he's  late " " lets go see where our classes " They weren't in the same class they feel sad but they will see each other in the break  " yo i heard they but the names of our teachers " " really lets see it " taeyeon said  When he sees the names he's eyes widened  " ti..Tiffany hwang" taeyeon said  " hi guys whats up ?" " soo taeyeon got Tiffany teacher "  " you are so lucky tae you will see her beautiful face three time in the week for the rest of the year " sooyoung said  " what are you two in your minds i hate her last year i was wish the year end to never see her again " taeyeon said  " you should forget tae and open a new page like she didn't do anything for you " sooyoung said  " he's right buddy you should forget and you can't ignore her she's your teacher for the rest of the year you need grades to be a doctor " yul said  "Let's change the subject please " taeyeon said    Taeyeon first geography class just begin and he wasn't that excited Tiffany enter the room with wide smile on her face  " good morning girls and boys , its new year i hope it will be good for you a