* Why doesn't Eve, since she loves Hazuki so much, simply decide to grow old with her in the book world - preferably picking things up from the moment she became 16? Eve is supposed to be pretty much all-powerful, so she could have arranged something like that easily, especially since age doesn't count for immortal beings.
* Related to the previous point: what is the use of Eve [[spoiler:giving Hazuki a one-night-stand with her, only to wipe her mind afterward? Quite a pointless exercise, especially with those love letters that don't belong to anyone anymore in the new world.]] Eve isn't evil or selfish, as she gave Gargantua what he wants, and plans to [[spoiler:return to Hazuki as her child,]] so she does care to be with her... but why do it in such a redundantly roundabout fashion?
** Japanese society is fine with girls having lesbian crushes, but expects that as adults they will a) grow out of lesbianism, b) marry a man, and c) bear children. All three are met with this "I can't be your lesbian lover but I will return as your child born out of a perfectly happy heterosexual relationship to you" ending. This is a mentality that was very strong in the yuri genre until some years after this aired.
** The visual novel has several different endings, all incompatible. One of them is an open-ended but happy (and legitimately lesbian) ending; one is completely miserable; one is...[[GainaxEnding this one]].