“Chainsaw Man” is a popular manga and anime series created by Tatsuki Fujimoto. The title itself does not have a “full form” as it is not an acronym or abbreviation; rather, it describes the central character and his unique ability. The story revolves around Denji, a young man who merges with his pet devil, Pochita, to become Chainsaw Man, a devil hunter with chainsaw-like abilities. The series explores themes of poverty, ambition, and the struggles of youth, all set in a dark, action-packed world filled with devils. If you have specific questions about the plot, characters, or themes, feel free to ask!