The Sister I Picked up Is Actually the Hidden Empress

[Swordsmanship + no system + multiple female protagonists + degenerated master-disciple relationship + degenerated brother-sister relationship] What follows will be exciting! ! ! My name is Luo Qingming, and I am a time traveler, but what is my identity in this world? I don't know either. Because I am not even biologically related to my parents, I picked up my sister. Due to my spiritual veins and physical condition, I was taken over by a cold fairy... Finally I discovered that she was actually my senior sister. My sister is leaving me, so are my friends, even my fairy is leaving me... Fortunately, I am the son of destiny. I am sure of everything that will happen in the future... To the point... Travel through time!