firestorage is a free Japanese online storage service for individuals and businesses, with tools to store, share, and send files. Its official homepage describes unlimited storage and a maximum size of 300 GiB per file, including use for large data and remote collaboration. Related services include Okuru for sending files to chosen recipients, Uketoru for collecting files from an open group, and Miseru for viewing images without downloading them. Individual membership and business plans are listed alongside user guides, FAQs, security information, and support contacts. The service focuses on temporary sharing and storage of large data, with separate tools for sending and receiving.