The End of the World: the Boss Destroyed the Vest at the Beginning

[The end of the world + strong female + light and dark dual abilities + two souls in one body + late stage infrastructure + stocking up of supplies + salvation + boss + slow relationship] She was betrayed and murdered by an unknown enemy. To return to my body, In order to find the truth and avenge his brother, She cooperated with Muchen and embarked on a journey of return. After a series of events, she discovers that friends are not friends and enemies are not real enemies. In this apocalyptic world of moral decay, to what extent can human nature collapse? She doesn't know. All she knew was that she wanted to live. That's all.