Viz Media licensed the original K anime series, K: Missing Kings, and K: Return of Kings.
The anime inspired the K: Missing Kings sequel film in July 2014, and then the 13-episode K: Return of Kings television anime series premiered in October 2015.
The fourth play, K: Missing Kings, will run in Kyoto from October 19-22 and in Tokyo from October 26-29.
Hulu and Neon Alley streamed the first K anime series and the K: Return of Kings sequel series.