Six months ago, Lord Hugh Disward (Huey),lost his eccentric grandfather, Wes. To inherit Wes's estate, Huey must take guardianship over the 'Mystic Archives of Dantalian' that contains forbidden knowledge and a mysterious girl called Dalian. Dalian and Huey begin an unlikely partnership as they solve mysteries caused by Phantom Books. Original Light Novel written by Gakuto Mikumo and illustrated by G-Yuusuke. Adataped to manga first by Chako Abeno, and again by Monaco Sena.

• Miyuki Sawashiro
• Daisuke Ono
• Kana Hanazawa
• Masayuki Katou
• Ami Koshimizu
• Go Shinomiya
• Sayuri Yahagi
• Mamiko Noto