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Main Characters

     Kadode Koyama 
https://static.tvtropes.org/pmwiki/pub/images/kadode.png

A geeky highschooler without any particular dreams or plans for the future, and Ontan's best friend since elementary school, she enjoys videogames and is a huge fan of the children's manga Isobeyan. Her father disappeared on 8/31 and her relationship with her mother has become strained. She has a crush on her homeroom teacher.


  • Alliterative Name: Her first and last name begin with K.
  • Meaningful Name: Mentions that as a child some would misread her name as "Monde" and flip it around to call her "Demon" which brings some reasoning to the title of the series.
  • Hot for Teacher: She has a crush on her homeroom teacher.
  • Nerd Glasses: She wears glasses and is noted to be a bit of a geek, especially with her love of video games.

     Ouran Nakagawa 
https://static.tvtropes.org/pmwiki/pub/images/ontan.jpg
Voiced by: ano

"Ontan" to her friends, she is an incredibly eccentric girl and avid gamer who dreams of taking over the world. It's impossible to know what's going on in Ontan's mind, and her antics are a major source of entertainment and frustration for her childhood friend Kadode. Despite her claiming to reject all social convention, she really does care deeply for her friends.


  • Big Ol' Eyebrows: One of her most recognizable features are these.
  • Cloudcuckoolander: She's very eccentric, and this annoys Kadode almost as much as it amuses her.
  • Drool Deluge: Downplayed since it isn't too excessive, but she sometimes has a long line of drool coming out of her mouth.
  • Generation Xerox: Is basically a female version of her father when it comes to looks.

     Kiho Kurihara 
https://static.tvtropes.org/pmwiki/pub/images/kiho.jpg
Voiced by: Atsumi Tanezaki

A trendy highschool girl who, in contrast to her friends Kadode and Ontan, has a normal social life and interests,


     Ai Demötø 
https://static.tvtropes.org/pmwiki/pub/images/ai.jpeg
A bespectacled girl with a strangely-pronounced last name and five younger brothers. She's a kindhearted girl who tends to act like a grandma at times, and has been Rin's friend since they were children.

     Rin Hirama 
https://static.tvtropes.org/pmwiki/pub/images/rin_76.png
Voiced by: Saeko Ooki
A tall, quiet girl who is a huge fan of BL. She has been Ai's friend since they were small children.

     "Ooba" 
https://static.tvtropes.org/pmwiki/pub/images/oba.jpg
Voiced by: Miyu Irino
Formerly a rising pop idol whose band was killed during 8/31, with only his body being unfound, he has now resurfaced as an Invader with a human body. Unlike other invaders he likes humans and wishes to know more about them, but is trying to remain hidden.

     Futaba Takemoto 
https://static.tvtropes.org/pmwiki/pub/images/futaba_7.jpg
Voiced by: Azumi Waki
A girl from Nagano who decides to attend a university in Tokyo despite the looming danger in order to learn more about the Invaders. Unlike the people of her rural town where the anti-Mothership weapon Chokujin is being built, she is opposed to the war against the Invaders. Like Kadode, she is a major fan of Isobeyan.

     Makoto Tainuma 
https://static.tvtropes.org/pmwiki/pub/images/makoto_0.jpg
Voiced by: Ryōko Shiraishi
An uncouth boy from Futaba's town, he is secretly a crossdresser and moves to Tokyo with Futaba to live his lifestyle openly. He denies being transexual or homosexual, and states that he simply wishes to be cute and beautiful. He quickly bonds with Ontan over their shared love of games.
  • Ugly Cute: Not too ugly, he has two buck teeth in his mouth but surprisingly looks cute when wearing his outfits.
  • Wholesome Crossdresser: He always keeps his outfits tasteful and states he just likes wearing them to be cute. He even helps Futaba out when she pees herself after their plane is rocked by turbulence during an attack on one of the shuttles by loaning her one of his outfits when they land.

Friends and Family

     Kenichi Kohiruimaki 
https://static.tvtropes.org/pmwiki/pub/images/kenichi.jpeg
Click here to see him post volume 2.
Voiced by: Kōki Uchiyama
Kiho's boyfriend, who follows various subcultures. Following her death he hunts down invaders in hopes of avenging Kiho.

     Shousuke Ojiro 
https://static.tvtropes.org/pmwiki/pub/images/ojiro.jpg
A college student obsessed with proving the existence aliens and UFOs, but has no interest in the invaders or mothership. He is always trying to convince the girls to join his occult research society club.

     Naoki Watarase 
https://static.tvtropes.org/pmwiki/pub/images/watarase.jpg
Voiced by: Taito Ban
Kadode's homeroom teacher whom she has a crush on. Rather lazy and immature at times, he nonetheless cares a lot about his students. Has a girlfriend who works at S.E.S., but their relationship is not very good.

     Hiroshi Nakagawa 
https://static.tvtropes.org/pmwiki/pub/images/hiroshi_8.jpg
Voiced by: Jun'ichi Suwabe
Ontan's older brother, a fat NEET who spends all day indoors trolling internet forums. He tends to share his younger sister's misanthropic outlook, but is a good person deep down.
  • Formerly Fit: He used to be much more slender, but gained a lot of weight after he graduated high school and became a NEET.

     Manami Koyama 
https://static.tvtropes.org/pmwiki/pub/images/manami.jpg
Kadode's mother, who has grown increasingly paranoid after her husband disappeared during 8/31. She constantly wears a gas mask to block out the F-line radiation from the Mothership. She has a new boyfriend named Takabatake, and together they protest the government's war against the Invaders. Her relationship with her daughter is strained.

     Nobuo Koyama 
https://static.tvtropes.org/pmwiki/pub/images/nobuo.png
Voiced by: Kenjiro Tsuda
Kadode's dad who went missing on 8/31.

S.E.S., Government and other adults

     Hikari Sumaru 
https://static.tvtropes.org/pmwiki/pub/images/hikari_34.jpg
Voiced by: Saori Onishi
Watarase's girlfriend. She works in Public Relations at S.E.S., but is increasingly suspicious of the purpose behind her company's weapons development and pessimistic about the future in general.

     Takarada 
https://static.tvtropes.org/pmwiki/pub/images/takarada.png
The head of S.E.S.'s robotics division.

     Prime Minister Ogino 
https://static.tvtropes.org/pmwiki/pub/images/ogino_1.png
The current prime minister of Japan, really likes idols.

     Miura Tarou 
https://static.tvtropes.org/pmwiki/pub/images/miura_8.jpg
Voiced by: Kengo Kawanishi
A independent journalist, he's known for his questioning of the government actions and studying invaders nature.

Invaders

     Uehara 
https://static.tvtropes.org/pmwiki/pub/images/uehara_9.jpg
Voiced by: Naoto Takenaka
A invader survivor living in the black mist zone, he has a very pessimistic disposition, referring to Earth as "hell" and has seen countless of his kin die to the humans.

     Tsutomu 
https://static.tvtropes.org/pmwiki/pub/images/tsutomu.png
Another invader survivor who got rescued by Uehara, in contrast to him Tsutomu is more hopeful and is set to staying as pacifist until the very end, even after witnessing his lover, Yuriko, being killed by humans.

     "Isobeyan" (SPOILERS
https://static.tvtropes.org/pmwiki/pub/images/isobeyan.jpg
Voiced by: Tomokazu Sugita
A invader who was saved by Kadode and Ouran 10 years ago, Kadode brought him to Ouran's home and hid him in her Isobeyan doll, just like the manga character he provides the girls with gadgets from his people.His objective on Earth was determining if humans were worth invading.

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