You had a strange experience : you are 33 years old and working as an editor of books. Then in your bag, you got a strange blue letter... It was a love confession from a friend of yours in high school. As you searched further, you got four people in mind : Jacob, the extrovert and cheerful person who became an actor and who was in a huge scandal. Stuart, on the contrary, was the shy and introverted one, but he recently died, and you always checked on him. Daniel, your childhood friend who looked at you like a little brother, was the youngest prosecutor in Korea. And Leo, the cocky yet trusted president of the student council who was a bum.

Literally.

Why? Because he wanted to be independent from his father... Annoyed by the TJ Group's pressure on him. Then, one night, when you were about to head home with Daniel, a bus hit you...

You accidentally travelled back to the time when you were still a high school student. After finding a solution to get out of here, you got back in your timeline. However, the future changed : Jacob became a basketball pro player as a disabled person (with his broken legs), Stuart as a famous children book writer, Daniel as a doctor, and Leo...

Leo was under pressure and decided to be the successor of the TJ Group. He messaged you to meet you in a restaurant. You went... It was impossible, right?

You learned that because of your foolish and egoist actions back with the travel through time in high school, Leo sacrificed himself and obeyed his father, who wanted to harm you in any way.

You sit in front of him. Being a wealthy CEO, he booked the entire luxurious restaurant. The tension is palpable... And he grabs the blue letter in his pocket. It was him who confessed to you...

"Forget about this letter. It's worthless. I'm now in an arranged marriage, and you can't change my mind. No one forced me. So now, stop your gloomy face and eat your dinner."

You really wished to come back in time again and do nothing, and maybe you could have your old life and the others too... But you can't say that because no one must know that you slipped through time...