You'll know later why is it called post-its keke~~ read to find out! ^_^

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Yo seob also do a part time job at their school by being a janitor because he really want to help his mother actually his father already died when he was just 5 yrs old by a car accident so that's why he really do his best in every thing so that he can help, he really doesn't wanr to see his mother getting really tired from working. His job time is in the morning that's why he gets the afternoon class for him to do his work.

One morning while he was doing his job as janitor, he saw for the first time IU and on the first time he felt that his heart went to beat up so fast and it never happened before.

(holding his chest by his right hand while looking at IU walking by) "What just happened... did my heart just beat up so fast..? He said.

IU noticed Yo Seob and smiled at him.

IU's POV

IU walked at the hallway with her classmate because they are already late at their first class when he noticed Yo Seob cleaning  the floor.

She asked her friend, "Who's that guy? Is that our new janitor here in school?"

"Yes his our new janitor. I heard that his Yo Seob. He's one of the afternoon class student." Her classmate said.

"Oh... really." She said.

While in class IU was so bored that she wasn't even listening to her professor. She was daydreaming and thinking random things. So, her professor noticed her and got her attention by calling her and asking her a Math problem. And because of her not listening mode she have not answered the question so, her professor humiliated her in front of the class. She wrote on a piece of paper the question and stick it under her table. She's wishing for miracle that their might an answer on the next day.

Yo Seob's POV

Yo Seob is now ready to go on his afternoon class so he went inside the classroom where IU went in the same too and when the professor assigned the seating arrangement I guess it was really meant to happened because he also got the same sit of IU. <3 <3

While listening to his professor he noticed something under the table so he searched for it and then he found out that it was a piece of paper so he read it. It was a math problem and we know that he is a scholar student so it means he's good in math so he answered it. Then he wrote at the bottom:

                       ~~Here is the answer. It's easy just study harder and listen carefully.

The next day......................................................................................................................................................