Perhaps it's not such a good idea to be rude at your waitress in this restaurant: they wield swords and flare flames at diners of the Ninja Restaurant.

"The ninja is mysterious," said Ou Chia-wei, owner of the restaurant simply named Ninja, explaining why he chose that theme for the Japanese-style restaurant. "On that premise, we can do magic tricks and light up the food."

Waitresses working the barely lit dining room floor burn specialty menus, which vanish without a trace of ash, and send flames snaking across tables as customers watch.

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