Arknights: Gun-Wielding Sakaz

One day, a voice sounded in my head. From its words, I learned the secret of the Source Stone, the pollution of demons, the nature of the Heir, the existence of the Star Pod, the history of the Behemoth, Sakota's host, and much, much more. I spied on all this prematurely and mistakenly, and therefore committed an irreparable mistake. That voice told me everything, but when I finally remembered to ask what it was, it didn't answer me. It just means that it has nothing to do with the Origin Stone, does not belong to Haihe, does not belong to evil spirits, does not belong to giant beasts, does not belong to pre-civilization, does not belong to this land, and does not belong to this world. It just had a dream and dreamed of all this. No one knows better, and therefore no one can answer the question. So I embarked on a journey. (No emotional lines, the text starts from the time when Ursus Froststar was rescued)