It's a small supermarket inside of "Lumine 1 building" in Shinjuku station south exit. It's Sijo Ishii. You can't choose many flesh food here,but you can buy some Bentos(cooked take out meals).
Things to do nearby
4.99 (382)
Sacred mornin walk & brunch-Meiji Shrine
4.90 (239)
Dive into the world of Tokyo's Underground Culture Car