The third Winter Court sourcebook for the L5R RPG brings the story firmly into the turmoil of the Clan War. Set in the lands of the Phoenix, it details the madness which overtakes Asako Oyo, causing the other clans to look more closely at the agenda of the Henshin; meanwhile, the ancient evil bound by the Black Scrolls comes ever nearer to its release.

Like the other Winter Court books, Winter Court: Kyuden Asako also supplies a wealth of information about Rokugani society, including gempukku ceremonies, castles, and the Seppun shugenja school.