Some tourists look around them but Hidetoshi Ishii prefers to look down.
The 65-year-old is a manhole cover hunter. He has spent the past two decades touring with a folding bike and map, on the lookout for treasures.
¡°It¡¯s like finding a gem. When I spot one, I can¡¯t help smiling,¡± Ishii beamed.

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