Rivz Coffee Roasters is a roastery cafe at the entrance of an alley in Sumida City, Tokyo, where specialty coffee is roasted in-house and brewed by drip. The recommended coffee has clear flavor notes written on the plaque, and the milk brew leaves a light acidity behind its rich milk flavor. You can watch the coffee being brewed and order while hearing explanations of the menu and beans. Staff attend to one person at a time, so waiting times grow long if you do not arrive at opening time.