[Ancient style + fantasy + imagination + suspense + weirdness + group portrait + two male protagonists] He kills masters, steals books, and indulges unknown evil spirits. After getting the "Return Book", strange things happened one after another. Every time he uses it, he has to pay a part of the price.
Until his name appeared on the page. Seven days to live.
One wants to fight for seven days for the dead, and the other wants to guard the long night for the living.
