In the vast elliptical galaxy IC 1101 within the Virgo constellation, a star shines; its planet Jaia orbits beneath pale blue skies. The Jaia Diary: Volume I - The Jaierion Nucleus unfolds on Jaia, within the sprawling peninsula of Jaierion during its medieval era.

Generations of peace and stability have been shattered by the reckless theft of the priceless Nujainya Plate from Arquiliam’s apparatus, opening a door to the underworld, and triggering a dormant, violent force of nature, the Jaierion Nucleus, to reawaken.