User blog comment:Crimson and Darkness/Volume 24 discussion blog/@comment-30924344-20171206171634

@B214 I found out how Hades mass produced those 100,000 artificial devils:

ルシファーの書 (Book of Lucifer)

初代ルシファーがリリスを使って悪魔を作り出す方法と彼女が肉塊に成り果てるまでを記録した書物. 初代の死後は息子のリゼヴィムが相続し、現代の科学・魔力・魔法に当てはめた場合の解釈についてや最初から上級悪魔クラスの存在を生み出すための方法についての考察が加筆された. リゼヴィムの死後は秘匿されていたのをアポプスが盗み、ハーデスへと譲渡している. 最終章ではこの書物とリリスの肉体を使い、ハーデスが人造悪魔を10万体量産している.

(in my own words from translation)

A book about how Lucifer created the first generation devils of the 72 Pillars using Lilith and the way she formed into a meat block. After the death of Lucifer, his son Rizevim inherited the book and the interpretation when applied to modern science, magical power, magic, and consideration on how to create the existence of an advanced devil class from the beginning was added. Apophis stole this book and gave it to Hades. Hades uses this book on Lilith to mass produce those 100,000 artificial devils.