Donten ni Warau Gaiden: Ketsubetsu, Yamainu no Chikai  

Cloudy Laugh Gaiden, Laughing Under the Clouds Gaiden, 曇天に笑う＜外伝＞ ～決別、犲の誓い～, Donten: Laughing Under the Clouds - Gaiden: Chapter 1 - One Year After the Battle, Laughing Under the Clouds: Gaiden Part 1

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.