This is a un-staffed, vending machine based, 24h operating "cafe" that is meant for people to get stuff done. As long as you buy an expensive vending machine coffee for like 450 yen, you'll earn the right to stay there as long as you want. It's like a cheap airport lounge. The space is good, the chairs are comfy, lots of people working or studying, and the view out the window looking over the river is better than looking at a busy street. WiFi was decent, potentially an easy go-to especially early in the morning or later in the evenings. They say no food allowed from outside, not sure how they impose that though 🤷‍♀️