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.
A variety of fan-created game items based in the Bleach setting have been created. They use the concepts of the setting (and usually the art) in what is probably a copyright-infringing manner.