(from ebookjapan):
Dreaming of the day when he would become a big star, Yumeji Toi left his ailing mother behind after an incident and moved to Tokyo, where he decided to join composer Satoguchi as an apprentice. He decided to join the apprenticeship of a composer, Satoguchi, and became his apprentice. Motivated by his mother's words, which he heard as a child, the young man lives in the midst of his desires...!