There's a manhua similar to this if anyone is interested. Its called "Don't Mess With My Sister". Its already 25 chapters in Webnovel(?), Mangatoon(15 chapters as of when this is commented) and Novelmic(pirate site for 25 chapters)
@DaGiant_18 its not, this is usually referred as Chapter 0. Its just that way in Manhuas. its the prologue