Tekkonkinkreet (鉄コン筋クリート), also known as Black & White, is a Japanese manga series written and illustrated by Taiyō Matsumoto, originally serialized from 1993 to 1994 in Shogakukan's manga magazine Big Comic Spirits. The story takes place in the fictional city of Takaramachi (Treasure Town) and centers on a pair of orphaned street kids – the tough, canny Black and the childish, innocent White, together known as the Cats – as they deal with yakuza attempting to take over Treasure Town.
A pilot film directed by Kōji Morimoto was released in January 1999. A feature-length anime film directed by Michael Arias and animated by Studio 4°C premiered in Japan in December 2006.
Plot
The story follows two orphans, Black (クロ) and White (シロ), who dominate the streets of Takaramachi, a once-prosperous metropolis now reduced to a violent slum controlled by warring gangs. Black is a ruthless street fighter who views the city as his territory, while White exhibits childlike innocence and often retreats into fantasy. Despite their differences, they form an inseparable bond, calling themselves "the Cats".
Their lives change when Black assaults three yakuza enforcers working for Snake (蛇), a corporate leader planning to demolish Takaramachi and replace it with a theme park. After multiple failed assassination attempts, Snake deploys three enhanced killers—Dragon, Butterfly, and Tiger—to eliminate them.