900 Bush St
San Francisco, CA 94109
Open until 2am every night, Izakaya Ninja's a must if you have a late-night Japanese food craving (though it's plenty good enough to visit during normal eating hours as well. The sushi is solid but you'd be remiss to skip over the izakaya fare in which they specialize -- try the Okonomiyaki, a japanese pancake with seafood. There's plenty of room if you're rolling with a big group, and plenty of flavored soju and Japanese and Korean beers if said group is thirsty.