I've been here a couple of times this year and it's OK. Nothing spectacular about the decor or the menu but it is priced on the lower end of the AYCE Japanese restaurants in the city. It's not very big and twice we came with a group of 10 so we sat in the far back up the stairs. It is one of the better AYCE places in the Yonge-Bloor area. It appears to be a chain of Aji Sai in the city and I haven't been to the others before.
Chinese operation here (like most of the Japanese restaurants in the city). The quality of food was average compared to others I've reviewed on Yelp. Sashimi is not as good as the other places. The service was average and the server told us we could only order ice cream once (as much as we wanted) because too much scooping it was difficult on her arms. One of the personal trainers in our group (yes, we're gym rats) offered her his services :P I've given this a 3 star rating.