Full Moon focuses on a 12-year-old girl named Mitsuki Koyama. Mitsuki is a talented singer who dreams of becoming a pop idol, but she is afflicted with throat cancer, which is curable only through a surgery that could cost her vocal cords and her ability to sing. The tumor in her throat also affects her ability to breathe well and sing loudly. On top of that, her grandmother hates music, and is completely opposed to Mitsuki's wish to audition. Her dreams seem impossible to achieve, until one day she is visited by two shinigami whom only she can see. Without knowing Mitsuki can see and hear them, they accidentally mention she only has one year left to live.
Realizing she cannot wait any longer to fulfill her dream, she runs away from her house and the shinigami to try to audition for a singing competition. However, the shinigami catch her before she is able to audition. Mitsuki moves one of the shinigami, Takuto, to make a deal with her—if she goes quietly when her one year is up, he will help her become a singer so that she may leave the world without any regrets. He gives her the ability to transform into a healthy 16-year-old self who is not encumbered by a throat tumor. Though there is much competition, she is able to win over the judges with her enthusiasm for singing and her excellent voice. To conceal her true identity, she chooses the stage name Fullmoon.
Genre: Animation