When on a business trip to Toronto for work a co-worker took a couple people to Kasura for dinner. It's your typical Japanese teppanyaki and sushi place. The atmosphere was nice but the restaurant was pretty dead on the Monday night we were there. Teppanyaki places without the energy of a crowd are pretty blah.
Our chef was a bit distant and not very engaging compared to similar restaurants I've been to. He did a little banging with salt and pepper mills and started an onion on fire but other than that it wasn't very impressive and the preparation of the food was bland. They charge extra for the salad where other places offer it as part of your meal. I also missed that we didn't get our rice fried and it was a bit bland in conjunction with the steak i got. The beef was good and cooked liked I aske. The dipping sauces were good but not remarkable.
Overall I'd say it's average and expensive for what you get - maybe it would have been more fun with a full restaurant, a big group and a more exciting chef.
If you are staying in the adjacent Westin it wouldn't be a bad choice but don't expect too much and if you are alone I'd sit away from the grill and enjoy a quiet table with sushi.