Running from a life she didn’t choose, in a city she doesn’t know, Sukanya, a young Thai girl, loses herself in Tokyo. With her Bangkok street smarts, and some stolen money, she stays ahead of her former captors willing to do anything to recover the computer she took. After befriending Chiho, a Japanese girl living in an internet café, Sukanya makes plans to rid herself of her pursuers, and her past, forever. Detective Hiroshi Shimizu leaves the safe confines of his office to investigate a porn studio where a brutal triple murder took place. The studio’s accounts point him in multiple directions at once. Together with ex-sumo wrestler Sakaguchi and old-school Takamatsu, Hiroshi tracks the killers through Tokyo’s teen hangouts, bayside docks and crowded squares, straight into the underbelly of the global economy. As bodies wash up from Tokyo Bay, Hiroshi tries to find the Thai girl at the center of it all, whose name he doesn’t even know. He uncovers a human trafficking ring and cryptocurrency scammers whose connections extend to the highest levels of Tokyo’s power elite.

This book gathers contributions on a variety of flowing collective systems. While primarily focusing on pedestrian dynamics, it also reflects the latest developments in areas such as vehicular traffic and granular flows and addresses related emerging topics such as self-propelled particles, data transport, swarm behaviour, intercellular transport, and individual interactions to complex systems. Combining fundamental research and practical applications in the various fields discussed, the book offers a valuable asset for researchers and professionals in areas such as civil and transportation engineering, mechanical engineering, electrical engineering, physics, computer science, and mathematics.