sunny boy books

Karyth is a brilliant but unremarkable mana-tech researcher on Eidolon Station, a sprawling metropolis where magic and technology coexist in a fragile truce. Driven by dreams of creating affordable, sustainable mana batteries, he’s spent years chasing breakthroughs—and just as often, weathering failures. His companion, Eirys, a witty and perceptive AI, is both his greatest support and most relentless critic, keeping him grounded when ambition clouds his judgment.