What's about my reasoning you don't agree with? Just curious, I prefer if you killed them off-screen but at least focus on the more important characters, these two are the worst characters yet I really hope we see them less of them if not at all
I don't agree that they are similar to Rin and Emma whatsoever except for the fact that they are both women, Thats about where the similarities end, if you're saying that because you think they are gay lovers or something you're mistaken.
Also the whole point of their little introduction is to explain that while they specifically haven't interacted much, the other versions of them were life long friends.
If you don't like Shiver because she's... mean? that's fine, i mean not every character can be a homerun for everyone but a lot of people are intrigued about where shiver's character can go from here.
But you're right in one aspect, the end of the 0.30 deserved to be longer, I just ran out of time and I will correct it by going more in depth in both of their character events.