I don't think Oya planned even half of the shit in that series but it's funny how the story still went more sensibly and gracefully than Attack on Titan did. Yeah though your points are all valid. I always bring up the vampires when I'm talking to people about the middle of the series lol. It's not that it isn't entertaining anymore, but he clearly gives up on a lot of what he was building up because he was more interested in getting to the aliens. It feels like a different series at that point. I know the aliens were established from the beginning but I preferred when they were strange inhuman and unknowable, this is just a standard invasion from a very human like sentient species. Even the horrifying parts were mostly stuff humans would do anyways, and the series already had enough humans doing cruel evil shit. Though maybe that itself was a breath of fresh air from having stranger more unknowable antagonists? It had been going on a long time I guess.
It's good but holy shit is it slow. I'm gonna give it a year or two to build up chapters. I hope he doesn't get bored and rush an early ending like Gantz:G.
'
One more issue I forgot to bring up is that the art can get seriously hard to follow sometimes. Some of the fights have the black-suited heroes fighting spiky knobbly-skinned black monsters in the middle of the night in fast-paced, motion-blurred action panels. Combine that with the relatively realistic way Oya draws faces and the breakneck pace at which new characters are introduced, killed off
and brought back to life, can make the story a bit hard to follow at times without going back and rereading the last chapter.
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Regarding the story, I honestly thought he was building up to giving the
vampires a more important role after the Osaka arc, where it comes out that they're apparently
allied with the aliens (and are most likely of alien origin themselves), but instead the two
vampire characters literally just fuck off after that fight and are never seen again. I think it would've been interesting if they were revealed to be somehow responsible for
the Giant Aliens' arrival, given their shared propensity for the consumption of humans. Given that they're the product of nanobots, it wouldn't be too much of a stretch to say that the Giant Aliens had sent the nanobots over to indoctrinate some humans to their cause in order to prepare Earth for their arrival. That would neatly tie them into the setup for the final arc.
I really liked the
Giant Aliens as the "final boss". In order for the characters'
"they're just like us" realization to have an impact with the readers, having the enemies
actually look like us (...just enough to engender empathy) is kind of necessary. Like, I'm not gonna speak for anyone else, but I kinda felt genuine sympathy for the first
mostly-human-looking alien they hunt down
who goes into a mad berserker rage after they brutally murder his son whereas it's much harder to empathize with the
HR Giger nightmare that crawls out of the thousand arm buddha statue, or the boss crow monster, or the 20 story tall axe-headed talking brontosaur, even if they're all technically going through the same situation. It would be hard to rationalize
not destroying the alien mothership if it had been filled to the brim with these horrifying, unknowable monstrosities, and I think the "stranger more unknowable antagonists" role is handily filled by the intensely creepy
God Alien / Gantz originator species that sates my appetite for cosmic horror.
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Probably the funniest thing about the manga is that the plot can essentially be summed up as, "Fuck off we're full, illegal aliens go home!"
Old comment but Ouran is one of my most loved series to this day and I'd recommend reading the manga afterwards since the anime doesn't cover the whole thing. The director for the anime Takuya Igarashi is a favorite of mine, he has a very clear style that is seen through a lot of his works, like his use of giant arrows to point to things (Ouran, Soul Eater, Bungo). He apparently did the Doremi series and Ashita no Nadja, the latter I've had on my ptw list for a while now.
I just got the manga box set NIB for $70, looking forward to reading through it this weekend. Did a cursory glance of some of the changes and tentatively I have to say I feel like I prefer the direction the anime went with Kaoru and Hikaru explicitly
not getting into a love triangle with Haruhi, an ending that leaves it ambiguous who Haruhi ends up with, and the incorporation of Renge as a recurring gag character. But hey, the manga is much longer, so I'm sure it'll be able to sell me on the original version of the characters/story.