Joining ICRR as an Associate Professor Publication date: Apr 1, 2026 I am pleased to announce that I have joined the Institute for Cosmic Ray Research (ICRR), the University of Tokyo, as an associate professor. I will be affiliated with the High Energy Cosmic Ray Division at ICRR, where I will primarily work on the Cherenkov Telescope Array Observatory (CTAO), the ALPACA experiment, and the Trinity experiment, focusing on very-high-energy cosmic-ray and gamma-ray studies. I was a graduate student at ICRR from 2003 to 2008, and I am excited to return and work again with many colleagues at ICRR. Prof. Ogio (left), the ICRR director, giving the appointment letter.