“kachera,” a quiz in which you guess rules hidden in pictures. “SPACE,” a puzzle game in which you deduce passwords from sculptures. “TETRIO,” a game in which you play Mario inside Tetris. “Nagenawa Typographer ,” a tool for writing hiragana (Japanese characters) within painted borders. “Oonisi Layout, “ the optimal keyboard for typing Japanese using the alphabet. “Osakana (fish) Keyboard ,” a fully 3D-printed keyboard that fits in your hand. Passed the “Hatsune Miku Low Range Test” using special vocalization. Introducing My Worthless Life is an autobiography compiling his early works. A digital nomad . A designer seeking beautiful alternative solutions.