I visited Tendou on a Saturday night and essentially everything was sold out. I tried the green tea soft serve which was very flavourful. I think it was actually a lot more concentrated in matcha flavour compared to ones I've had in Japan! My sister had the mix of sesame and green tea also said it was good. My only complaint was that we waited an extremely long time for the soft serve as it seemed there was something wrong with the machine yet they didn't really say anything to us... would only go back to try the other desserts and the Hokkaido drink.