Careful: This wiki contains SPOILERS, read with caution!
Tokyo, 2049... Thanks to the Galapagos Reform enacted by the government, Russia, China, America and Japan are now connected by a Hyper Loop system. This globalization has turned Tokyo into the most crime-ridden city in the world. To fight the rising crime, those who have been working in the shadows since the Sengoku period are needed... They are...the Shinobi!
Shinobi are the main driving force of the series. They fill various roles for clients such as, spies and bodyguards.