Pre-flight shopping at Narita airport a couple of weeks ago, I passed a mannequin sporting a light-blue necktie and a turquoise wig with pig tails dangling down to its mini skirt. The vision spoke volumes: It was Hatsune Miku, of course, Japan's holographic, animated virtual pop star, beloved fashion icon and model for pop culture fans and cosplayers worldwide. But why was she suddenly manning the plaza concourse of Japan's busiest tourist portal, standing tall beside Uniqlo and Shu Uemura?

It turns out Miku is part of an expansive display in the new airport outlet of Cospa Akihabara, a shop devoted to Japanese pop culture products for global otaku (geeks)and cosplayers. The Narita venue opened in February and had a lively crowd of consumers at its counters when I stalled next to Miku last month, gingerly fingering my wallet.

Tourism has long been a fiscal conundrum for Japan, the country's potential cash cow stifled by its resistance to foreigners and xenophobic anxieties, and hampered by a reputation for overblown prices — a crude hangover from the bubble years of the 1980s. The 3/11 disasters and ongoing plight of Fukushima only exacerbate the problem.