Ozumo - Contemporary Japanese Cuisine. Tsunami - San Francisco, CA, 94117 - Citysearch. Recommends Joined 5 years ago Good food, good staff, great sake. Richard the bartender was great - explained the different sake selections in detail, and even gave me a taste of some of the unfiltered sake which was great. The fish was fresh, which really defines the difference between good sashimi and bad sashimi. Overall a great experience for a single businessman's night out on the town. ~RNM Restaurant~ GARCON! Restaurant- Lounge- Bar- Bistro- San Francisco.