From wikipedia:
Bleach is a Japanese shōnen manga series written and illustrated by Tite Kubo that started an entire franchise, including an anime series. Bleach follows the adventures of the hotheaded teenager Ichigo Kurosaki, who inherits his parents' destiny after he obtains the powers of a Soul Reaper - a death personification similar to the Grim Reaper - from another Soul Reaper, Rukia Kuchiki. His new-found powers force him to take on the duties of defending humans from evil spirits and guiding departed souls to the afterlife, and set him on journeys to various ghostly realms of existence.
User summary:
The Bleach D20 Classless System is a fan-created game product that uses intellectual property and images in a copyright-infringing manner. The basic system is an adapted and modified version of Bleach D20.