I moved from Kyoto University in 2011 April in order to establish Subaru Prime Focus Spectrograph (PFS) project at IPMU. I worked as the first PFS Project Manager until 2014 November to see the instrument construction actually started. Since then I have been working on “Lite (Light) satellite for the studies of B-mode polarization and Inflation from cosmic background Radiation Detection” (LiteBIRD) particularly in terms of telescope optics and testing. My instrumental experiences are based on such as PFS and Kyoto 3DII, the latter of which I developed in Kyoto as the principal investigator and was successfully used on Subaru for fourteen years from 2002 to investigate active/interacting galaxies, strongly gravitationally lensed objects, and Fast Radio Bursts, and so on.