kokubyaku_no_avesta
Avesta of Black and White.
Following the cancellation of Dies Irae Pantheon, series creator Takashi Masada began work to redo the game's intended first arc as a separate Light Novel. With art by G Yuusuke, it is part of the greater Shinza Bansho Series that includes Paradise Lost, Dies Irae, Kajiri Kamui Kagura and Jishoochihei Sensen Aditiya.
A Visual Novel adaptation has also been confirmed.