Astropath Guardian: Key to the Echo Well

Xiao, a delivery boy in a run-down town, is an orphan who doesn't even know his parents' names. He thought that in this life he would just ride an electric bicycle with peeling paint and deliver orders after orders in the mist - until the beggar in a ragged cloak appeared and said, "I have been waiting for you for twenty years."​ A copper key engraved with strange symbols and the phrase "the door will open only when the key is in the lock" instantly tore his ordinary life apart. The beggar Mo Chen said that he is a descendant of the "Guardian of the Star Language". His parents disappeared in the fire twenty years ago to protect a secret; and the pursuer "Shadow Contract" has long been eyeing his life.​ In front of the old bell tower at midnight, he read out his name. The ancient well rose from the ground, and the stone door at the bottom of the well was engraved with patterns that had the same origin as the key. Behind the door is the "Lost Realm" hidden in the gap in time, with talking stars and black shadows waiting to seize the key; behind the door may be hidden the whereabouts of his parents, and also the fate he has to accept.​ When the guardian mark appeared on his forehead, and when a strange girl walked out of the darkness and said, "You are finally here," Xiao finally understood: what he delivered was never takeaway, but a mission that had been postponed for twenty years. But Mo Chen's eyes always hide secrets, and the voice of the Shadow Contract leader always lingers in his ears - is this "protection" salvation or another trap?