MAGIC OPS kono May 18, 2021 発表資料 https://docs.google.com/presentation/d/e/2PACX-1vRKQuOsyqlvSg5qidnRknWcsKIxLBtxHrMFsDPPWStRw-FtOsDK0FrjYQvkUkAatQpMBBcnh6BMs7nq/pub?start=false&loop=false&delayms=3000