Full Moon wo Sagashite

Full Moon wo Sagashite (をさがして, Furu Mūn o Sagashite, lit. "Looking For Full Moon", alternatively titled Full Moon in English) is a Japanese shōjo manga by Arina Tanemura. The manga was serialized in Shueisha's shojo manga magazine Ribon from January 2002 to June 2004 and collected in seven tankōbon volumes.

Plot
12-year-old Mitsuki Kouyama's dream to become a professional singer is shattered when she's diagnosed with throat cancer. If a tumor isn't horrific enough, how about being met by two angels of death shortly after? Meroko Yui and Takuto Kira, of the shinigami duo "Negi Ramen", inform Mitsuki that she has just one year left to live. Instead of getting discouraged, however, Mitsuki decides to make the most of her last year, and pursues her singing dream with a passion. Aided by Meroko and Takuto, Mitsuki finds success and failure, love and loss, and deals with her fate and other difficult subjects the best she can. Full Moon wo Sagashite is the story of a little girl who refuses to let something as insignificant as fate slow her down.

Why it Rocks
Great animation.

Cool stories.

Amazing plot.

Awesome characters especially Mitsuki herself.