ヨルムンガンド (Series) favorite_border

[DeepL Translation - needs review] Volume 1 Introduction: Yona, a boy who hates the weapons that killed his parents, joins the private army of arms dealer Coco. Coco is trading weapons with the military of a certain country, and is targeted by forces that want to prevent him from doing so. But Yona, who has been accompanying Coco, fights back with the weapon he hates...

(Translator: DeepL)