あずみ (Series) favorite_border

[DeepL Translation - needs review] Volume 1 Introduction: Ten children, including the young girl Azumi, were secretly raised as assassins in a secluded place. They were raised as elite assassins who never doubted the old man's words, taking him at his word that they were all right. One day, they are told by their grandfather that it is finally time for them to go out into the outside world. But before that, a terrible ordeal awaits them, the culmination of all their training!

(Translator: DeepL)