[18+] ᴀ ᴅᴀʀᴋ ꜰᴀɴᴛᴀꜱʏ ʟɪɢʜᴛ ɴᴏᴠᴇʟ.

As Demons continue to ravage the iron-walled town of Longden, Amae and Oto are its magicians, pledging their lives with other warriors to defend against the seemingly never-ending attacks. But rumors of a powerful Demon Master disturb the area. Neighboring cities are falling. Food and supplies are running low. A harsh winter is inevitable. As the number of deaths start to rise, the Elders finally agreed with assembling a rescue team to seek the powerful Heavenlight Kingdom for help.

On their first and perhaps last adventure, the siblings vowed to save their home before it falls to the Demons.