The point of the game is to solve the mystery about what is going on on the island, what the organization is and to develop the relationship with the girls and how they interact with each other. There was more than enough story about turning an enemy into your friend. Isn't Leah, Nadia, Zero, Sarah, the orange girl, aeris and probably Nyx enough?That is literally the whole point of the game. if you think it is getting old hen this game is not for you.
You can always replay the game if you think this is the point of the game.
I didn't play a bunch of the latest updates because right now the Nyx content feels very out of place and not very engaging, so I'm not sure where we're at right now. But I guess I keep skipping it again at least until the Nyx arc gets finished.