The protagonist of a traditional spy game relies on super memory or reasoning, while the protagonist of this game specializes in modern astrology and statistics. He was able to capture periodic fluctuations like a "constellation of stars" in the Japanese military's encrypted messages that seemed irregular to ordinary people, and thus predict the Japanese military's password update cycle, communication node locations, and even the "logical tendency" to read encrypted files. The essence of this "astral disk deciphering method" is to use the knowledge of periodic laws in astronomy and apply it to the mathematical structure of military codes. Each use will consume the "background information fragments" he has collected, creating a hard limit similar to "puzzle consumables", forcing the protagonist to constantly plant ears and eyes within the Japanese army and steal information to supplement the deciphering ability.
