Donten ni Warau Gaiden: Shukumei, Soutou no Fuuma  

曇天に笑う＜外伝＞ ～宿命、双頭の風魔～, Donten: Laughing Under the Clouds - Gaiden: Chapter 2 - The Tragedy of Fuuma Ninja Tribe, Laughing Under the Clouds: Gaiden Part 2

A series of side stories of Donten ni Warau series. Some of the stories take place before and some after the end of the main series.