Grammatical Wasteland: Memory Is My Last Bargaining Chip

WastelandCrimeMultiple heroines "No matter what happens, please remember that your name is Gu Cang and you have lived in Jin City for eighteen years." The purple sun hangs forever, and there is no night in the city. My name is Gu Cang, an amnesiac detective from Jin City. I have a magic mirror that can trade everything, but the price is the proof of my existence. Today, I am the only survivor of the "Forty-Six Massacre in the Old Tavern". The Order Officer's pocket watch was pointed at me, and there were always eyes outside the window. The last page of the diary is the transaction record written by me personally: "The deal is established. Payment: 'all memories about her'. In exchange for: 'the instinct to live'." Now, I have to figure out three questions before everyone kills me: First, what happened in the pub that night? Second, why... Why do they want me to forget "her"? Third, and most importantly - Are the words in the diary really written by me?