I've just spent 2 hours farming 79 Naryu Coins...... It's really depressing when you know that you need 90 Naryu Coins for that 10-Transformation Stone Crystal Bundle.. The problem is that I need 195 Transformation Stone Crystals from Grand Celestial 6 to 9.
Ok let's do math:
20(bundles) * 90(naryu coins) = 1800 naryu coins that I actually need.. So 1800(naryu coins)/79(which I get per 2 hours) = 22.7 h * 2 = 45.4 hours I need to be in Mushin Tower one-shoting those monsters and hoping to get 2-3 coins, since most of the time they drop 1 coin..
Please do something about this at least increase drop rate or remove it from Transmute Window as "Need"