This document summarizes Kentaro Hatori's presentation on booting directly from openSUSE ISO files using grub2. It provides background on Hatori and his involvement in several Japanese open source and Linux communities. It then discusses Koedo LUG, a local Linux user group in Kawagoe-city, Japan. The main topic is examples of grub2 configuration files for booting many different Linux distributions directly from ISO files, including openSUSE, Ubuntu, Fedora, and more. It notes difficulties booting openSUSE ISO files directly and emphasizes having fun with Linux as most important.