Aww, ok, so far so cute, I love that she loves her little sister after reborn (that means she's a good girl and there won't be unnecessary drama between them, it's weird to have happy families in manhuas of this type, lol), I also love that her reborn has more like a scientific explanation, not that she was magically chosen to reborn for who knows what reason.
Thank u for working on this (I'm gonna follow it, I feel pretty positive about this story uwu). <3