Had a quick lunch today at the Red Spoon on the 2nd floor of Shiroyama Trust. For 580 yen, you get a great omelette rice. The size isn't so big, but it's enough. Fresh made, not pre-made bento. Great for a fast lunch!
Click here for the official link
4-3-1 Toranomon, Minato-ku, Tokyo Shiroyama Trust Tower 2F
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Hours: 8am to 6pm weekdays only, closed weekends and holidays