I donโt know if Iโm rude with my comment but if you donโt like it, donโt keep wasting your time. There are so many other dramas that you can watch and enjoy at the same time ๐. Itโs just my personal experience after watching so many dramas. If I donโt like it, I dropped it and move on to another one
Maybe the brother had some psychic abilities that helped him to find out the password?๐๐