keimay's Links
Dimitri is unfortunately not as open-minded as Yuuto, so doesn't accept "Alternate Universe" siblings as readily: Especially when they're daughters to the Yumenos, not the Kuronekos. That said, he does try to think of Lunette as a sister. After all, this is about to become his home world and he wants to be good to all of his new family... But it's still very hard, and he's actively having to TRY to treat Lunette like a SISTER instead of just a friend.
Chron doesn't know Lunette as well as you would think she might. She remembers Lunette from the Facility, but the two of them rarely had reason to interact back then. Even now, Chron isn't sure how to start a proper relationship with her new little sister. It still throws Chron for a loop, so she simply tries to avoid interactions as much as possible.
The sister Lunette probably avoids the most, sorry Chron.
When Yoshiya first met Lunette, he was a very guarded person. He might have acted like he was friendly, but he was a secret keeper and didn't want to actually commit to any meaningful relationships. Lunette changed this for him completely. With her presence added to the Harmomean Family, Yoshi found a reason to honestly try to be the loving brother he pretended to be. He adores her fully and openly now, and would likely have never opened his heart if not for meeting her.