A bar/cafe that opened this year in the Ebisu area of Tokyo is called Milks - and it combines delicious soft serve ice cream with your favorite liqueur!
Milks are located only a two minute walk from the Ebisu train station, so it's a perfect spot to check out if you're sightseeing in the area. They have over 100 different types of liqueur to serve on top of your ice cream - so there should be a flavor that interests you. Some of the choices include Creme De Strawberry, Frangelico, Cherry Marnier and Malibu Coconut, but their menu of liqueur choices to serve with your ice cream is nine pages long! Each table also has a couple of sprinkle shakers (both chocolate and rainbow sprinkles) to make your ice cream even more pretty to look at.
As for the store itself, it's decorated in a really fashionable way - it has hanging, hammock style individual seating up at the bar area, as well as plenty of tables to sit at too. Everything is fresh and bright white, and there is loads of greenery around, with potted plants hanging from the ceiling and from ledges.
If you want to head to Milks for some adult dessert on your trip to Tokyo, you can find them at 〒150-0021 東京都渋谷区 恵比寿西１丁目9-7 グランベル恵比寿西 ５階 (just paste that into Google Maps if you have wifi, and you'll be golden!)