Piapro is a Japanese creator community and collaboration site for sharing and combining works such as music, lyrics, illustrations, text, and 3D models. Its homepage features new and highlighted submissions, tags, character filters, and official collaboration projects. Visitors can browse public work, while registration enables uploads, comments, and other member interactions. Creators can set usage-license conditions for each submission, and members may reuse a work only under the terms selected by its creator. Piapro's official posting guide limits fan creations to original work and derivative work specifically permitted by its character, song, and content guidelines. The site is designed to let creators contribute different media and build new works together.