I checked this place out after hearing about it from multiple friends and it definitely lived up to the hype. I got the injeolmi bingsu cup while my friend got the coffee one.
An issue I've always had in the past with other shaved ice places is that the topping to shaved ice ratio was always off. There would always be too much unflavoured shaved left over. I didn't have that issue at Cups because they layered the toppings and there was an abundance of mochi throughout the cup of shaved ice.
I'll definitely be back to check out the other flavours!