Vivi is one of the last runesmiths, practicing a craft made obsolete by divine spirit blades. Only Vivi and her grandfather know their runeblades’ true potential.

Cursed at birth, her ether debt promises an agonizing death on her eighteenth birthday. She has months left to prove the value of her revolutionary forging technique, but the world’s ether hunters see her as a joke.

Everything changes when a rebellious spirit rejects them all to bond with her. Now a fugitive, Vivi teleports beneath the surface and enters an inescapable demonic prison where survival is measured in ether. Fighting monsters is her only shot at paying off her debt, increasing her spirit’s power, and breaking out.

Vivi has never fought a monster in her life, but she’s spent a lifetime forging magical weapons.