Shousetsu Berserk: Enryuu no Kishi  

The Flame Dragon Knight traces the rise of the warrior Grunbeld from humble beginnings to the all-powerful Apostle who will one day face Guts in mortal combat!(Source: Dark Horse)

Shousetsu Berserk: Enryuu no Kishi was published in English as Berserk: The Flame Dragon Knight by Dark Horse on April 17, 2019.