Headscratchers / Drakengard 3

Zero's morality

• If Zero was such a horrible monster even before she got the flower, why does she even care about what happens to the world? She mas more reason then any of the other Intoners to use her power to take over the world in the time she has left.
  • She may not have any compunctions about killing, doing it simply on reflex, but that doesn't mean she wants the world to end.
    • There is literally nothing about her personality, both before or after the flower, to even come close to suggesting she cares about anyone else. There is no reason whatsoever given why she's doing this. It's both inconsistent and terrible writing.
    • She mostly just wants to get back at the flower for bringing her back. She was perfectly happy being dead and saying goodbye to the shitty world she lived in, so when it brings her back and tries to influence her to destroy everything, she basically tells it to fuck off and tries to kill it, which would also allow her to die.
    • I think I heard in the Japanese dub it was more about her wanting to take 'responsibility' for the flower rather than an obligation to the world. She had to kill off the intoners to finish what she started when the flower wouldn't allow her to die. And Zero does care about Michael and Mikhail, so it can't be said that she cares about nothing. She's abrasive and violent but she's still human deep down and she still needs other people (which she said herself in her prologue DLC).
    • Feeling like you want the world dead is one thing. Actually devoting yourself to killing it is quite another. We all have emotions that are out of proportion to our desires sometimes. Besides, Zero has never listened to anybody, similar to her or not. She's not about to change that just because the being talking at her isn't human.

Cannot self-terminate

• In the C ending, Zero wants to kill herself, but her dragon is dead and she doesn't have any weapon made from a dragon... but she has Mikhail's corpse nearby! She could easily "accidentally fall" on Mikhail's fangs.
  • She mentions that the flower won't allow her to die. Indeed the first time she tried to kill herself, the flower responded by budding and creating the five sister Intoners. There's no reason to think the same thing wouldn't happen again if she tried to kill herself rather than having someone else do it.

Brainwashing limitations?

• Intoners were made to lull humanity into lying down and letting the flower kill them. So why do they have to physically fight so many human soldiers in their DLC chapters? Couldn't they just dronify the soldiers by singing at them?
  • I’m pretty sure it’s mentioned that there are some humans/other races that are resistant/immune to the Intoners’ Song. While the game presents the numbers as quite large, it could be, story-wise, small groups of aligned individuals who are rebelling against the brainwashing. That, and, IIRC, not all the Intoners are even aware about the brainwashing properties of their Song. It may not simply occur to them to end the fights via singing.

Dumb gods

• In Ending B, Zero bargains with the gods who created the Flower so as to save Mikhail. They do so...but why would they ever agree to save someone who stands in the way of their attempt to destroy humanity? It's not like Zero has anything the gods want.
  • Considering Mikhail now has the Flower, the Gods may have used the opportunity to reign in and unite two of their ‘kill humans’ projects into one. While the Intoners are weak against dragon weapons, it’s unknown whether Flower Mikhail shares such a weakness...

The prologue cutscene

• Why would One be talking about starting "the world's end" when that is the opposite of what she wants in every other part of the game? I know Early-Installment Weirdness is a thing, but this is a single line that's completely misleading and could've easily been erased in development. It also clashes with the plot element of the Intoners she's right next to not knowing anything about the apocalypse.