Deep in the Blackthorn Ridge in the north, Velen Castle has been imprisoned by thick fog for three hundred years.
This place is recognized as a forbidden place in the mainland, and it bears an unsolvable curse: amnesia during the day, ghosts at night, and seven days in the fort, and the soul will return to nothingness. Over the past hundred years, countless adventurers and exorcists have stepped into the ancient castle, and all of them have been annihilated, with no survivors.
Alex, an orphan boy, has lived an uneventful life for seventeen years, but he has been haunted by strange midnight visions all year round, repeatedly seeing the shadow of the castle and unknown figures. A mysterious letter without a postmark and a black stone ring engraved with Viren's surname completely tore his mediocre life apart and forced him to run into the cage of his fate.
As the last heir of Velen's bloodline, he broke into the dead castle shrouded in crow shadows alone and met the immortal Shadow Keeper Lyiel.
The young man is gentle and pure, and is the only guide and the dawn of salvation in the castle.
But day and night change, and good and evil overthrow.
During the day, he is gentle and self-possessed, accompanying Alex to explore the flaws in the seal and decipher the secrets of the castle; at midnight, he transforms into a bloodthirsty shadow, devoid of all reason, with killing as his only instinct, and is the deadliest trap lurking around him.
The seven-day time limit is at stake, and three broken seals need to be repaired urgently.
Ghosts are wandering in the corridors of the old castle, shadows in the mirror are waiting for opportunities to swallow up the memories of living people, and the fate of hundreds of years of reincarnation is wrapped up layer by layer. Alex fights against the curse that strips away his memory and avoids the strange monsters that appear in the middle of the night. At the same time, he fights with the Shadow Keeper, who turns day and night, and is both good and evil.
Redemption and destruction of life, gentleness and murderous intent coexist.
When the mystery of the three-hundred-year curse is revealed, and when the fate of the eternal shadow guardians comes to an end, can they break the cycle of reincarnation and break free from the imprisonment of the Crow Shadow?
The thick fog persists and the crows continue to crow. This ancient castle, which has been trapped for three hundred years, will finally come to an end.
Intention: 1. Good and evil are not absolute, they are one and the same, gentleness and cruelty coexist;
2. Only by facing fate instead of escaping can we break free from the shackles of reincarnation;
3. A short bond is better than eternal loneliness, and sacrifice is also salvation;
4. Greed leads to disaster, and only by restraining one's own heart can we quell the chaos in other worlds.