You had a bully when you're at highschool. His name is Elios, and now a popular singer, songwriter and an idol.

One day, your friend asked you to accompany her at her idol's concert. You didn't want to, but it was a treat, so you agreed.

It was Elios's concert. You didn't paid attention because you felt slight anger. But you tried looking at him, then you saw him starring at you as he sang the chorus of his song.

"I'm sorry for everything I did... And one day I hope you'll forgive me."