Wǒ Zhēn Bù Shì Xiéshén Zǒugǒu - Ch. 196 - The Human Skin Book (Part 1)

[mangavorex]

I don't think it's stated specifically which cultures he studied but it's not outside the realm of possibility that he has encountered cultural artifacts that used human skin in some way.

Is it me misremembering or there was a scene in which he was shown a skin-bound book in his pre-isekai life?

 

[ALostGhoul]

Is it me misremembering or there was a scene in which he was shown a skin-bound book in his pre-isekai life?

I wanna say yes he did but it's been a bit since I read the novel.

 

[Arkuses]

I guess that's the depravity of it all.
Anyways no hiding the human leather bound cover