Tokyo Dystopia is a full-text search system. You can search lots of records for some records including specified patterns. The characteristic of Tokyo Dystopia is the following. * High performance of search * High scalability of target documents * Perfect recall ratio by character N-gram method * Phrase matching, prefix matching, suffix matching, and token matching * Multilingualism with Unicode * Layered Architecture of APIs Tokyo Dystopia is available on platforms which have API conforming to C99 and POSIX. Tokyo Dystopia is a free software licensed under the GNU Lesser General Public License