[Zhan Shuang] Did I Make a Mistake in Searching for the Truth on the Way to Defection?

"One day, you will become the hope of mankind." "You will pierce the heart of your old friend with a sharp blade, and the metal, ice rain and blood will forge your path forward. This road is destined to be lonely and great, and your mission is to keep walking." "My friend, my pride." Plot＞Emotional line The whole text is written in the second person. The protagonist's gender is female by default, and the name is replaced by ■■■■■ Intention: Believe in companions, accept yourself, reconcile with the past, and meet the future