Put a man in the photos,why are they all single women?
Why putting an ugly man when we can have cute girls?
EDIT: Also, Lyanna and Claudia aren't single.
Also, even if the other girls aren't in official relationship, I see all of them as in a big open polyamory relation.
From the perspective of Lyanna (as she's the main character):
She is in an official open couple with Claudia, and sincerely loves her.
I think it could easily evolved in a throuple by including Pandora. She clearly loves Claudia. She was at first jealous of Lyanna. But seeing the relation dynamic between Lyanna and Claudia, how the two love each other but are totally open to have relations with other girls, she start to like Lyanna. I hope this feeling will strengthen and Pandora will loved Lyanna too. And that Lyanna will love Pandora as she loves Claudia. Lyanna MUST love her! Because our shy nerdy pretty goth girl is best girl! (Let me simp Pandora in peace

).
It will more difficult with Diana, as she seems strongly in love with Lyanna and less of the sharing type. Perhaps it could hapen with the help of Pandora. If Lyanna/Claudia couple evolve in a throuple with Pandora, as she is good friend of Diana, perhaps she could help Diana to accept sharing her

Lyanna with other.
For the other girls, I don't see a relation as strong as with Claudia (and maybe Pandora and Diana). They are deep friends, with benefit ;-), but I don't see theses relationship becoming "true" love.
And I think It will be great. It will be a good change from all the harem games here, where everything revolves around the MC, where all the LI are in love of the MC and the MC only.
I hope we will see other (open) couple/throuple. Perhaps Tina and the nun?