Rei Kagami is Japan's most beloved idol and a four-century-old kitsune hiding in plain sight. When former idol turned journalist Aoi Mizushima sees through his illusions, a forbidden Resonance awakens between them, a spiritual bond that amplifies their powers while slowly killing them both.

In modern Tokyo, idols are the new gods, feeding on devotion through screens and stadiums. But when a rogue yokai unleashes an ōyurei born from Internet hate, Rei and Aoi must choose: let the Resonance consume them, or embrace a transformation that will erase everything they were.

Facing deadly shikigami, corrupted yurei, and a digital nekomata, their greatest enemy isn't the monsters hunting them. It's the bond itself. Because the Resonance offers only two endings: death... or transcendence into something neither human nor yokai.