The "Yubatake pudding at night", which is the image of the illumination of Kusatsu Onsen, is emo. The color changes when you add lemon juice!
The mysterious pudding that changes color, "Yubatake Pudding at Night," is on sale at the pudding specialty store "Kusatsu Onsen Pudding" in Kusatsu Onsen. Limited time from the evening when the sun begins to set and is lit up.