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Humanity Has Declined 

Jinrui wa Suitai Shimashita (original title)
1:33 | Trailer
An unnamed girl acts as a mediator between humans and "fairies" after they have become the most prosperous species following the decline of the human population.







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Series cast summary:
Mai Nakahara Mai Nakahara ...  I / ... 12 episodes, 2012
Unshô Ishizuka ...  Grandpa 8 episodes, 2012
Satomi Akesaka Satomi Akesaka ...  Fairy / ... 7 episodes, 2012
Hisako Kanemoto Hisako Kanemoto ...  Fairy / ... 7 episodes, 2012
Nozomi Sasaki Nozomi Sasaki ...  Fairy / ... 5 episodes, 2012


After years of declining birth rates that has forced the human race to cede more and more territory to beings known as "Fairies," only a handful of humans remain among what's left over from human civilization while the rest of the world is dominated by these new highly intelligent creatures. However, despite humanity's diminishing importance, our young unnamed heroine (aka 'I' or 'Watashi') decides to take over her grandfather's position as a mediator between the races. She expected it to be an effortless job, but it turns out that it is nowhere near as straightforward as she had imagined, much to her dismay. Nevertheless, she will persist by maintaining good relations with the fairies while putting up with their strange, and sometimes irritating, habits.

Plot Summary | Add Synopsis


TV-14 | See all certifications »

Parents Guide:

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Official Sites:

Official site [Japan]





Release Date:

1 July 2012 (Japan) See more »

Also Known As:

Humanity Has Declined See more »

Company Credits

Show more on IMDbPro »

Technical Specs



Aspect Ratio:

16:9 HD
See full technical specs »

Did You Know?


During the beginning of Episode 10, when Watashi is reading from her predecessor's fairy contact journal, the on-screen display and font is extremely similar to the video game series "Resident Evil." Also, the content of the journal mimics the infamous "Keeper's Diary" from the original Resident Evil. See more »


'I' (Watashi): This is how culture spreads. When someone has a new idea, it is immediately copied.
See more »

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User Reviews

This anime should've been edited
18 February 2016 | by pinkarraySee all my reviews

The beginning of this anime started off stupidly and I was about to stop it but gladly I didn't. Though, it still wasn't a solid entry into the anime world. A young girl who has a simple name (as does everyone else in the series) or rather likes to be called a simple name, "Human" is somehow surviving in a world where humanity has seemed to have dwindled.

In the creativity department, it isn't good nor bad, it's just average but most other times, it isn't being creative, rather it rips off other anime and more tropes than any Disney film could ever imagine. Episode titles can be generic despite their unpredictability and the characters are generic as their nonsensical dialogue. The main character is a tsundere who is very grating to watch, the fairies who I mistaken for dolls are okay, they're cute and they have a pretty interesting backstory, but everyone else isn't all that great, the little girl with blonde hair serves as an attachment for Human, the cat-like robot who I forgot the name of is whiny and some other characters have little personalities to stick with you despite the fact that they're secondary characters.

Now let's talk about the story. The story seems to have a nice idea behind it once you really get into it but failed because it just isn't creative enough. It could've been an anime you wouldn't really want to end but it is ruined by frustrating characters and boring writing. There are only a few interesting things and cute moments.

At the beginning, the voice acting done for some of the fairies sound like nails-on-a-chalkboard but then improve quickly. So, overall, the voice acting isn't bothersome for the most part except for also Human's at certain points.

The art is too similar to other anime, the characters are drawn quite uniquely though and also some of the animation can even go through stuff, the animation even made me laugh at one point.

I don't even see why people rate this anime so highly. It is overall, childlike but aimed at teenagers. At first, I thought it should've passed off as shoujo but maybe it is a seinen anime. I'm a girl and I didn't enjoy this very much but the main character is a girl and is usually around girls so it makes this seem pretty girly for boys. Viewers over 14 will likely find this a tad too childish, especially in the humor department.

Grade: C-

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