Ubel Blatt~ユーベルブラット~ (Series) favorite_border

[DeepL Translation - needs review] Volume 1 Introduction: When the black sword roars, everything that stands in its way will be crushed...!　What is the purpose of the mysterious boy, Keintzel, who possesses superb swordsmanship?　The battle against the "Spear of Betrayal," which was supposed to have been defeated by the Seven Heroes, and the shocking truth that is revealed at the end. A fantasy tale on a grand scale!

(Translator: DeepL)