Reign: The Conqueror Movie

Overview

Alexander Senki (アレクサンダー戦記 Arekusandā Senki?), known in English as Reign: The Conqueror, is a Japanese anime first released in 1999. A re-imagination of the life of Alexander the Great based on the novel by Hiroshi Aramata, Alexander was intended to be a ground-breaking international production that drew on all the resources of the worldwide adult animation community. The design of characters and settings was given to Peter Chung, the Korean-American animator behind Aeon Flux; most of the production work was also handled by Korean animators.

Source: AniList