Jigokuraku: Tokubetsu-hen - Mokke no Mori  

Hell's Paradise: Jigokuraku Side Story: Forest of Misfortune, 地獄楽 特別編 勿怪の森

This is a unique tale to commemorate the release of the Hell's Paradise anime. In it, villagers attempt to eliminate a newcomer who has settled among them, but despite their efforts, he remains unharmed.

Jigokuraku Tokubetsu-hen: Mokke no Mori was published digitally as an English simulpub as Hell's Paradise: Jigokuraku Side Story - Forest of Misfortune through MANGA Plus.