The protagonist, originally a minor office drone in the 21st century who died from overwork. She transmigrated into the body of the Fourth Princess of the Yu Kingdom, who was deeply pampered and lived a lazy life. After her three imperial brothers died in a landslide, she became the only heir to the throne. She discovered a golden finger ability through a software called Infrastructure Maniac that appears above people's heads, allowing her to identify geniuses. She is determined to not be a pawn and plans to build an infrastructure kingdom. She is currently 15 years old and female.
