Hello! The game is and will be completely free, forever. Chapter 1, chapter 2, and even whenever the game is completed.
And no, what you're seeing it's a story. You won't be able to choose what girl you want to keep or ignore.
Does this game have the same problem as the other game I played in which you cannot use words like brother, sister, mother, father etc.? I was just wondering because the MC has just called Elizabeth his "caretaker," which I am thinking is his mum? If so, is there a patch which will put the correct titles back in please?