The Twisted Wonderland novels are authored by Hioki Jun, a member of Toboso Yana’s personal studio (D-6th). They are also responsible for writing/supervising event scenarios and vignettes for the Twisted Wonderland mobile game. (ref: hmv.co.jp / Yana Twitter)
Yana is in charge of the concept, in-novel illustrations, cover and fold-out art for the novels. (ref: Yana Twitter (novel 1) / Yana Twitter (novel 2))
Twisted-Wonderland the first novel: Rose-Red Tyrant
・Changes to the official English-language translation of the first Twst novel
・Game vs. Novel Prefect Comparison
• Q&A: Is there anything in the novels where Yuuya going into a club is brought up?• Q&A: In the game how many people know about Yuu is actually from the other world. What about in the novels?
• Q&A: Are the Twisted Wonderland novels canon, divergent, or maybe a little bit of both?
Twisted-Wonderland the second novel: Usurper of the Wilderness
・Changes to the official English-language translation of the second Twst novel
・Game vs. Novel Prefect Comparison (coming soon)
• Q&A: So in the second novel, after Leona’s overblot does it go into his past or is it just the speech afterwards?• Q&A: Does novel Leona treat Yuuya differently compared to the game?
Twisted Wonderland Reference Note 