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にんにん (Ninnin, "like the ninja") — a secret nerd haven in Ikebukuro that even locals miss, because it sits on the 3rd floor directly above Super Potato, "the most popular retro game store in the world." Started as a trading-card shop (old-back Pokémon cards, Yu-Gi-Oh) and now deals in everything nerds love: cards, toys, collectibles, figures, and per the reel "probably more Game Boys than any store in Tokyo." Cute ninja mascot. Climb the staircase past Super Potato to 3F.
