Rihaya would do anything to save her dying younger brother.Even sell herself.After accepting a mysterious one-year contract that pays more money than she has ever seen, she is taken beneath the earth into a hidden kingdom where sunlight does not exist… and humans are treated as offerings.Inside the ancient underground palace, every girl is forced to wear a veil.Black veils belong to demons.Red veils belong to werewolves.White veils belong to creatures far more terrifying.And ruling over them all are the Three Cursed Kings.Vael — the chaotic demon king with cruel green eyes and dangerous obsession.Kaelric — the feared red wolf king slowly losing control of the beast inside him.Azraven — the ancient white king whose awakening once plunged the kingdom into eternal darkness.No human survives the palace for long.Girls disappear nightly.Monsters roam after seven o’clock.And escape is impossible.But the deeper Rihaya falls into the cursed kingdom, the more she realizes something horrifying:The kings are not the only ones trapped underground.And she may be the key to either saving them…or destroying them forever.