Well, one thing I do like about the ending is the way it answers the "But can we be happily immortal together for a long time" question with a rather sweet, "Well, those two have been, so why not us?"
In the end while I fundamentally like the idea of this better than Prunus Girl--I'm a yuri fan and not basically a trap fan as a rule--I have to admit I don't think it was realized as well. Prunus Girl dragged sometimes, probably was too long really. But the characters had more energy and individuality, there was something to drive their interactions. Even if a lot of the something was pretty simplistic and often repetitive, it gave Prunus Girl more vibrancy somehow. Plus the character designs of the girls in this were pretty samey; the gender-uncertain lead in Prunus Girl had a lot of pizzazz.
When it comes to lesbian vampires I have to agree with
@Pyoro I'm preferring
Vampeerz. More interesting plot, more distinct characters, funnier comedy. This has still been fun though.