Star Rail: a Traveler Across Time and Space

(No system + single female protagonist + micro-surgery) "Don't be afraid, I'm always by your side." "But... We are almost dead..." "He... Forsaken us..." "Yes, He abandoned us and the whole world." "But I won't abandon you, we will both survive." "Believe me..." When the girl opened her eyes for the first time, she was greeted by several strangers, but these strangers saved her and freed her from the ice block she had been in for who knows how long. Then, they became family. When the girl opened her eyes for the second time, she was greeted by several other strangers. These strangers saved her and got her out of that dark place, and then they became friends. When the girl opened her eyes for the third time, she saw a familiar yet unfamiliar person in front of her. The man looked at the girl with a puzzled look on his face, and then they no longer knew each other. When the girl opened her eyes for the last time, there was no one in front of her. The girl's expression was a little lonely, but soon, the familiar voice sounded. "Long time no see, you still haven't changed at all~" "Yeah... I've always been who I am, I've never changed..." "But this time..." The girl firmly held the hand of the person in front of her, "I found you..."