Until now like always, I’ll be one step behind you. I'll always wish for the continuation of your dream.

I'll never forget the memories the four of us made back then. Even if we're apart, we still walked on the same road to grow into the adults we are today.

I'll never forget those days with you.

The orphaned son of a musician and a composer; Aine is a young man who has been adept to music since he was born. From the tragedy that took his parents' lives, the boy took a promise upon himself to sing out to the world his and his family's love for music. This promise became his dream and happiness.

It was his uncle, a professor (lit. Hakase) at Saotome, that guided him to enroll to Saotome Gakuen to pursue that dream and further his studies in music. He made cherished friends with Kotobuki Reiji, Otonami Kei, and Katagiri Hibiki, who shared that same dream and future with him.

However... years later, instead of meeting hope, Aine met despair and loneliness in his future, losing what he loved the most. His song.

To stop himself from suffering even more... the young idol almost took his life at sea... only to be saved by his uncle and fall into a deep, long coma.