It could be that he's intentionally making all of these background girls pretty because he wants to have them in reserve for use in the man-whore path.
The memorable locker room scene shows how hard it's going to be to introduce the recently revealed LIs into this path. It's going to be damn hard to do anything behind their backs without them knowing
not to mention that in the case of a few of them he may have put them in the background to foreshadow their upcoming bigger roles in the story
So let's take a closer look at one of these seemingly featureless background heroines.
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We first see her when they first appeared in college. She doesn't seem to stand out at all.
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This first shot of her from the back shows that Ocean took great effort to design a detailed tattoo for her.
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Here the first interesting things begin. We see that the same person in the front thanks to the presence of the girls in the red and white blouses from the previous slide.
So we learn that this mysterious girl knows both Ayua and Sasha and her clique, people important to the main plot
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We see her again twice during the next few days at college
in the slide on the left we see how detailed and laborious her tattoo design is. In the slide on the right we see her holding a guitar in her hand suggesting that she is a musician and in combination with her clothing indicating that she plays in a rock band.
So she has more of a characterization and trait that you don't usually give to a background character. Not to mention Nika musical preferences which Bob also wrote once. Ocean confirmed that they match hers
So you can't rule out that the main plot will go in a direction where you'll start dealing with her band and therefore automatically with her? How many potential scenarios of this type could be lurking hidden in the background by him.
He's already done it with Zara, she passes you by in the hallway as if nothing had happened, you have no idea that you'll play for a few more hours and you'll be living with her under the same roof
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It's no wonder that all those girls hidden in the background are beauties, you never know what might really surprise you