Such a surprising place! I was here for two days without knowing this existed! An under ground shopping strip with so many good things! A small Uniqlo and other shops + a good sushi restaurant right next to the entrance near the main mall. I visited a screen protector fitter for my iPhone after dropping and smashing the screen protector cheapest in Osaka! Only $25 Aus for a new protector other places quoted me $60+ also good to get to the station in winter when you don’t want to walk outside haha! The best!