This is the JPN version of EarthBound Beginnings (also known as Mother (マザー) ). As the first version of the game, it has a number of useful glitches; this run abuses the way the game handles the "Bread crumbs" item to warp off the edge of reality and casually walk straight into the final boss's lair under a second faster than the previous run.
We also have a more normal run of the localized version, which doesn't include this glitch.