»¦♥.♥¦«
The protagonist, the girl who tends to brood over things and dreams of becoming a pop singer, but suffers from a tumor in her throat, restricting her ability to sing. She is an orphan who grew up in an orphanage school, and later with her strict grandmother, who forbids her from singing. She is told that she will die if the surgery to remove her vocal cords is not performed, but Mitsuki still refuses the surgery, saying that she would rather die than not be able to sing.
One afternoon, two Shinigami, Takuto and Meroko, who only she could see, visit her and inform her that in one year, she will die. Driven by this, she went on to pursue her dreams of being a singer, much to the dismay of the Shinigami.
With Takuto's help, she is able to transform into Full Moon, a sixteen-year-old pop idol, completely free of cancer and able to sing. She wants to become a singer because she wants to tell her love, Eichi Sakurai, that she loves him. Mitsuki lost contact with Eichi when he moved from the orphanage to America. In the manga, after he leaves, Mitsuki realizes that she loved him. She waited to call him in America and tell him her feelings, but later finds out on television that his plane had crashed and sees his name on the list of the deceased. Although she knew about his death all along, she went into denial and pretended not to know due to her intense pain. Eventually, the Shinigami find out about Eichi's death, and Mitsuki is forced to deal with Eichi's death.
In the anime, Mitsuki does not learn about Eichi's death until much later in the series, when she travels to America with Ms. Oshige and Dr. Wakaoji. In this case, Eichi and his parents died in a car crash. Upon hearing about Eichi's death, Mitsuki runs away and goes to Eichi's grave, wanting to die and be with Eichi. Upon her return to Japan, Mitsuki becomes extremely depressed and decides to give up on singing, despite numerous attempts to convince her otherwise. However, after Izumi's attempt to take her soul and after hearing Takuto talk about his memories and how he regrets committing suicide, Mitsuki decides to sing again so that she can live her life to the fullest.
Later in the manga, it is revealed the reason she can see Shinigami is that there was a soul of a dead person surrounding her. At the same time, it is revealed the soul is Eichi, who has been watching over her all this time. She is hit with the Scythe of Fate, which removes Eichi's soul from her body.
Three years later, she returns as a singer under her real name, meeting Takuto and confessing she loves him. Holding Takuto's hand, she sings the last song for her concert, and finally Eichi's soul leaves her.
»¦♥.♥¦«
