This Liquor Store is one of the biggest in the Kanto region of Japan, and they carry hundreds of selections of fine wine and spirits. Including regional favorite in Japanese sake and Nihonshu. If you like Nihonshu from all over Shikoku and Tohoku, this liquor shops carries it, even rare sake selections.
My personal recommendations:
Kikusuido no Potato Chips #できたてポテトチップ
Still the #1 brand of potato chips in Japan, in my humble opinion. Plain and lightly salted high quality chips are simply the best snacks.
#2 炭火焼き赤鳥 宮崎 / Char-Grilled Red Chicken from Miyazaki Prefecture - a local delicacy.
Heat in the microwave for a minute or two and enjoy as is with your favorite beer and sake.
Yen and credit card are accepted. Open until 9pm and most days.