HISUI (Hyperspectral Imager SUIte) is a spaceborne hyperspectral imager being developed by Japanese Ministry of Economy, Trade, and Industry (METI) as its 4th spaceborne optical imager mission. 1) OPS onboard JERS-1 satellite (1992 –1998) 2) ASTER onboard NASA’s Terra satellite (1999 -) 3) ASNARO (2014-) 4) HISUI (2020-) HISUI covers 0.4 –2.5 µm region with 185 bands, 20 x 30 m spatial resolution, and 20 km swath. It consists of a reflective telescope and two grating spectrometers. HISUI launch is currently scheduled in January 2020 by SpaceX’s Falcon-9 (SpX-20). HISUI will be deployed on Japan Experiment Module (JEM) of International Space Station (ISS) for a three year operation.