Go to the official PCSX2 website. Do not use "bundle" installers from YouTube descriptions.
Before we dive into the download process, let’s address why the PS2 version is considered superior by hardcore fans. download+game+inazuma+eleven+ps2+iso+best
A fan group released a mod that adds characters from Inazuma Eleven Ares and Orion into the PS2 ISO. This requires patching your ISO via a tool called xDelta. It is the best way to experience modern characters on the classic engine. Go to the official PCSX2 website