I've always wanted to try to see what the hype was about. Lucked out today when there was a very short line.
Service:
Unlike the reviews below, service has definitely improved from what was described below. There was 1 cashier and 4 others making the orders. They were polite and service was as expected for a self-serve establishment.
Food:
Tried the tsujiri sundae and matcha crepe cake. The matcha soft serve was very flavourful that gave me a lasting impression. The matcha was the perfect intensity. The mochi, cookie and red bean pairing was okay and didn't blow me away. The rice krispie like base was bad. I didn't like the texture and bitterness of it. But I would definitely come back for the matcha soft serve.
The crepe cake was very good, better than the others I've tried elsewhere. The crepes were very thin with a very intense matcha flavour cream layer. Flavour wasn't as strong as soft serve but comparable and good level for a cake.
Will definitely come back to try a few more in the future but probably the more original matcha items without the fancy pairings.