Tekkonkinkreet is an anime film that premiered in fall 2006, produced by Studio 4°C.

About the production: the story comes from a manga, the film runs about 111 minutes and its current status is "finished".

Its main genres are action, psychological and supernatural, with themes such as Found Family, Coming of Age, Gangs and Crime.

On AniList, Tekkonkinkreet has an average score of 77%, a very good score, and appears on 35,254 users' lists.

Black, a boy who seeks to bend the city to his will through strength, and White, his innocent counterpart, are two orphaned street kids living in the slums of Treasure Town. When real estate developers threaten to transform Treasure Town into a massive theme park, its very existence is put at risk. Determined to protect both White and their city, Black takes on the yakuza and assassins, gradually losing his innocence as he confronts a dark manifestation within himself. (Source: GKIDS)

Official synopsis from AniList.