Time Out says
Here's where to get the best cheese tart in Japan. Hailing from the northern island of Hokkaido, Kinotoya is famed for a variety of confectioneries, but this Shinjuku shop focuses exclusively on the above-mentioned delicacy. Eat it fresh from the in-store oven, or pick up a pack for your picnic or post-lunch moment.
Lumine Est 1F, 3-38-1 Shinjuku, Shinjuku-ku, Tokyo