Japanese cheesecakes are very different from western cheesecakes. The texture is unique, like a softer and airy-er version of a pound cake, not dense and sticky. Taste-wise, also nothing like the western version. Way less sweet, which allows one to appreciate the other flavors, notably from the egg, a lot more. Pretty good value too, ~$8 per original cheesecake I believe? Cheaper than grocery store cheesecake for sure. Just don't underestimate the lightness or smaller size - there is over 1000 calories per entire cheesecake, so share with others!
Downsides to this location are the ridiculously long lines outside (so cold) and lack of seating.