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In a Japanese cultural context, the term "sharking" most commonly refers to , an illegal activity historically associated with Yakuza (organized crime) syndicates. Alternatively, in internet subcultures, it is sometimes used as a slang term for skirt-lifting (up-skirting), a form of public harassment that is highly illegal and socially condemned in Japan.

: In non-sexual contexts, "sharking" can refer to: Gaming : Attacking from below a stage in fighting games. Trading : Ripping someone off in games like Team Fortress 2 . Billiards : Intentionally distracting an opponent.

Kenji stepped off the curb. The light turned green, and a thousand people surged forward. He didn't look at his feet; he looked at the gaps. He saw the world in vectors—a group of teenagers veering left, an elderly woman with an umbrella drifting right. He slid between them like water through gravel.