Squid Girl

Squid Girl

The cover of the first manga volume featuring Squid Girl.
(Shinryaku! Ika Musume)
Genre Comedy, Fantasy, Slice of life
Written by Masahiro Anbe
Published by Akita Shoten
Demographic Shōnen
Magazine Weekly Shōnen Champion
Original run July 2007February 2016
Volumes 22
Anime television series
Directed by Tsutomu Mizushima
Written by Michiko Yokote
Studio Diomedéa
Licensed by
Network TV Tokyo
English network
Original run October 4, 2010 December 20, 2010
Episodes 12
Anime television series
Shinryaku!? Ika Musume
Directed by Tsutomu Mizushima (general director)
Yasutaka Yamamoto (director)
Written by Michiko Yokote
Studio Diomedéa
Licensed by
Network TV Tokyo, AT-X
English network
Original run September 26, 2011 December 26, 2011
Episodes 12
Original video animation
Shinryaku!! Ika Musume
Directed by Tsutomu Mizushima
Yasutaka Yamamoto
Keizou Kusakawa
Studio Diomedéa
Licensed by
Released August 8, 2012 September 8, 2014
Episodes 3

Squid Girl, known in Japan as Shinryaku! Ika Musume (侵略!イカ娘, lit. Invade! Squid Girl) with the subtitle The invader comes from the bottom of the sea!, is a Japanese manga series by Masahiro Anbe, which was serialized in Akita Shoten's Weekly Shōnen Champion between July 2007 and February 2016. An anime television series adaptation by Diomedéa aired on TV Tokyo between October and December 2010, with a second season airing between September and December 2011. Three original video animation (OVA) episodes were released between 2012 and 2014.


Squid Girl is a girl from the ocean who possesses blue squid-like tentacles for hair. Vowing to invade mankind as revenge for its pollution of the ocean, she attempts to make a beach house called the Lemon Beach House, owned by the Aizawa siblings and located somewhere on the Japanese coast, her base of operations. However, when she accidentally breaks a hole in their wall trying to demonstrate her power, she is forced to work as a waitress to pay off the damages. Thus, Squid Girl begins her life on the surface, learning new things and encountering many curious visitors to the beach house.


Main characters

Squid Girl (イカ娘 Ika Musume)
Voiced by: Hisako Kanemoto (Japanese); Christine Marie Cabanos (English)
The main protagonist of the series. Squid Girl is a girl from the ocean who plans to invade humanity as punishment for the pollution done to the sea. However, after causing damage to the Lemon Beach House (which she planned to use as a base), she is forced to work as a waitress to pay for the damages. Like a squid, she has ten fully controllable blue tentacles that protrude from the top of her head like hair that can regenerate if they are cut off, as well as spew squid ink from her mouth. She also possesses numerous abilities from various species of squid, such as glowing in the dark like the firefly squid, moving the little fins on her hat, or changing her weight at will in order to better control her tentacles. According to her, she will allegedly die if she takes her hat off, which is made apparent when trying to force it off causes her life to flash before her eyes.
She enjoys shrimp and greatly fears natural predators of squids like sharks and killer whales (to the point that even swimming floats shaped like killer whales terrify her). Although generally immature and often getting herself into mischief, she is a fast learner, able to master complex things such as math and other languages in a short period of time. She almost always ends her sentences with "de geso" (でゲソ, lit. "squid tentacles") as a copula and emphasizes "ika" in sentences, which is written in katakana (e.g.:ja na ika (~じゃなイカ, lit. isn't it?)). In the English dubs, she incorporates various squid and fish puns into her dialogue.
Eiko Aizawa (相沢 栄子 Aizawa Eiko)
Voiced by: Ayumi Fujimura (Japanese); Heather Pennington (English)
The manager of the Lemon Beach House who lives with her siblings Chizuru and Takeru. She is a strong-minded girl and constantly has to keep Squid Girl in check. Despite her frequent irritation towards Squid Girl, Eiko does seem to care for her more than she is willing to admit and the two eventually become good friends. Video games are one of her main hobbies, and studying is her primary weak point. A tomboy, she loathes wearing girly clothes and even skirts.
Chizuru Aizawa (相沢 千鶴 Aizawa Chizuru)
Voiced by: Rie Tanaka (Japanese); Shelby Lindley (English)
Eiko's older sister, the main cook and commanding chief of the Lemon Beach House who has blue hair and almost never shows her eyes in most situations. While she has the appearance of a kind person, she possesses almost superhuman strength, superhuman abilities, and a fearsome aura which she will direct at anyone looking to cause trouble in the beach house or threaten her family and friends, the latter of which often keeps Squid Girl under control just by fully opening her eyes. She seems to be concerned about her weight and despite her near-superhuman abilities, she becomes downhearted when she is thought of as something other than a normal human. She was mistaken as a Hanya, a Japanese demon.
Takeru Aizawa (相沢 たける Aizawa Takeru)
Voiced by: Miki Ōtani (Japanese); Amanda C. Miller (English)
Eiko and Chizuru's little brother. Takeru is an elementary school student who enjoys playing with Squid Girl, whom he calls "Squid Girly" (イカ姉ちゃん Ika Nee-chan, lit. "Big Squid Sister").

Supporting characters

Sanae Nagatsuki (長月 早苗 Nagatsuki Sanae)
Voiced by: Kanae Itō (Japanese); Xanthe Huynh (English)
A neighborhood friend of Eiko who has a pet dog named Alex. Eiko describes her as a typical 'airhead'. She develops an obsessive crush on Squid Girl, often trying to get intimate with her at every opportunity and getting attacked in the process. She keeps a vast collection of Squid Girl photographs and memorabilia. She develops inhuman reflexes upon taking Squid Girl's photos.
Gorō Arashiyama (嵐山 悟郎 Arashiyama Gorō)
Voiced by: Yuichi Nakamura (Japanese); Jason Wishnov (English)
A lifeguard and Eiko's childhood friend who is dedicated to protecting the sea and the people on the beach. He is usually serious about his job but will sometimes get riled up when Squid Girl messes about, most often when she pilfers shrimp from his meals. Despite many girls on the beach finding him attractive, he himself has a crush on Chizuru, but doesn't have the courage to confess his feelings to her.
Nagisa Saitō (斉藤 渚 Saitō Nagisa)
Voiced by: Azusa Kataoka (Japanese); Cristina Vee (English)
A surf-loving girl who works part-time at the Lemon. Unlike everyone else, she sees Squid Girl as a genuine threat to humanity and fears her greatly. Squid Girl, on the other hand, enjoys the fact that there's finally someone who fears her and thus constantly teases Nagisa whenever she can. For a short period, Nagisa started dressing up as a guy in order to attract female customers and stop Squid Girl from teasing her, but she gave up after assuming she needs to be the one who recognizes her as an invader.
Cindy Campbell (シンディー・キャンベル Shindī Kyanberu)
Voiced by: Hitomi Nabatame (Japanese); Laura Post (English)
A scientist and extraterrestrial researcher from the United States of America who believes Squid Girl to be an alien, and is constantly trying to get her to admit being one so she can take her to her lab for analysis and examination. If she is on the beach, Cindy wears a green bikini, white flip flops, and an opened red jacket while her hair is tied up. Typically, she uses contact lenses when she is not wearing glasses. Cindy has something of a rivalry with Sanae due to their shared obsession with Squid Girl. She also suspects Chizuru of being an alien herself. She is fluent in both Japanese and English.
Harris (ハリス Harisu) , Clark (クラーク Kurāku) and Martin (マーティン Mātin)
Harris Voiced by: Seiji Sasaki (Japanese); Victor Lee (English)
Clark Voiced by: Anri Katsu (Japanese); Tony Oliver (English)
Martin Voiced by: Tetsuo Gotō (Japanese); Jonathan Meza (English)
Cindy Campbell's fellow researchers who studied at MIT and work in a secret laboratory on the beach with Cindy. Harris is the black-skinned researcher, Clark is the slim Caucasian researcher, and Martin is the chubby Caucasian researcher. Though they have the talent to make beneficial contributions to mankind, their desire to communicate with aliens is more important to them. Thus, they have a reputation as "The Three Stooges" (3バカトリオ San Baka Torio). The contraptions they develop tend to make life miserable for the main cast, like when they accidentally vaporized the Lemon Beach House and experienced the wrath of Chizuru. However, their intentions are well-meaning. In the manga, Clark is the more intelligent of the group. In the anime, each of the Three Stooges are genius inventors as showcased when each tried to get Chizuru's DNA sample. Despite their work affiliation with Cindy Campbell, they don't consider her their friend.
Kiyomi Sakura (紗倉 清美 Sakura Kiyomi)
Voiced by: Kokoro Kikuchi (Japanese); Carrie Savage (English)
A middle school student whom Squid Girl makes friends with after an attempt at doorbell ditching goes wrong that had Squid Girl evading Chizuru. She is the first person whom Squid Girl officially makes friends with, and they soon become quite close.
The Southern Winds Owner (南風の店長 Minamikaze no Tenchō)
Voiced by: Rikiya Koyama (Japanese); Tony Oliver (English)
The unnamed owner of a rival beach house called The Southern Winds (南風 Minamikaze). A rather strict manager, he hopes to capitalize on Squid Girl's popularity by making his own creepy kigurumi masks based on her likeness, filled with various gadgets that often go awry. These kigurumi are often worn by his daughter Ayumi. He often tries to challenge Eiko so that he can get the real deal to work for his shop.
Ayumi Tokita (常田 鮎美 Tokita Ayumi)
Voiced by: Ayako Kawasumi (Japanese); Sarah Anne Williams (English)
The daughter of the unnamed The Southern Winds' owner. Though her beauty attracts a lot of customers, she is painfully shy around people, especially men. In order to face people, her father often fits her with the Squid Girl kigurumi. She occasionally works at the Lemon as a means to improve her sociability and is quite bashful around Eiko. However, she is fine talking to anyone she doesn't consider to be human, which so far includes Squid Girl (being a squid), Chizuru (due to her inhuman abilities) and Sanae (due to her reflexes), and can also talk with animals (in the case of Alex). In the first drama CD, she confesses that if she isn't wearing a kigurumi mask, she can't properly express herself.
Tatsuo Isozaki (磯崎 辰雄 Isozaki Tatsuo)
Voiced by: Shunzō Miyasaka
A lifeguard who works alongside Gorō. He is often judged by his appearance as being no good and usually tries to pick up girls with no results.
Kozue Tanabe (田辺 梢 Tanabe Kozue)
Voiced by: Akemi Kanda (Japanese); Erika Harlacher (English)
A gentle girl with a peaceful aura, who sometimes talks with Squid Girl, hinting that invading might not be the best thing to do as not all humans are bad. It is implied that she also comes from the sea, as she has a hat similar to Squid Girl's and makes statements that indicate she isn't human. The first syllables of her name spell out 'tako' (たこ), meaning "octopus."
Aiko Saitō (斉藤 愛子 Saitō Aiko)
Voiced by: Hiroko Ushida
Takeru's elementary school teacher and Nagisa's older sister. Aiko is jealous of Squid Girl's popularity with her students as she was once popular with them before she came into view. She loves kids. And she was Ruka's classmate during their time.
Ruka Shirosugi (白椙 留夏 Shirosugi Ruka)
Voiced by: Hiroko Ushida
The beach nurse who is sometimes harsh towards people who end up in her clinic multiple times and towards the lifeguards whenever they slack off. Ironically, she hates returning injured persons for the third time in order to not disturb her slacker lifestyle, as shown opening all appliances after the first aid clinic closes. It was revealed that Aiko and Ruka was once classmates and that the latter was a gangster.
Yuka Nishimura (西村 由佳 Nishimura Yuka)
Voiced by: Naoko Sugiura
One of Kiyomi's classmates who also becomes friends with Squid Girl.
Tomomi Mochizuki (望月 知美 Mochizuki Tomomi)
Voiced by: Yumi Uchiyama
One of Kiyomi's classmates who also becomes friends with Squid Girl.
Ayano Watanabe (渡辺 綾乃 Watanabe Ayano)
Voiced by: Yukari Oribe
One of Kiyomi's classmates who also becomes friends with Squid Girl. She only appears in the anime.
Keiko Furukawa (古川 蛍子 Furukawa Keiko)
Voiced by: Misato Fukuen
A clumsy female police officer who often patrols the Lemon.
Yuta (雄太)
Voiced by: Yuko Sanpei (Japanese); Marianne Miller (English)
Takeru's best friend from school.
Mini Squid Girl (ミニイカ娘 Mini Ika Musume)
Voiced by: Hisako Kanemoto (Japanese); Christine Marie Cabanos (English)
A miniature version of Squid Girl that appears in people's dreams (mostly Sanae's dreams). Like Squid Girl, she has a strong appetite for shrimp, though her vocabulary consists of only one word, which is 'geso' in the original version and 'squid' in the English dub. A Mini Squid Girl can purportedly live for up to 150 years. As instructed by a mysterious nerd, the Mini Squid Girl can co-exist with a large Squid Girl.



The manga by Masahiro Anbe was serialized in Akita Shoten's Weekly Shōnen Champion between July 2007[1] and February 2016.[2][3] The series was compiled into 22 tankōbon volumes released between March 7, 2008 and May 15, 2016.[4][5][6] It is published in Taiwan by Chingwin Publishing Group.[7][8]


A 12-episode anime adaptation by Diomedéa aired on TV Tokyo between October 4 and December 20, 2010. The fifth and sixth DVD/Blu-ray volumes, released on April 20, 2011 and May 18, 2011, contained bonus "Mini-Ika Musume" side-stories.[9] A second anime season, titled Shinryaku!? Ika Musume (侵略!?イカ娘),[10] aired in Japan between September 26[11] and December 26, 2011. Both series were simulcasted by Crunchyroll.[12] An original video animation (OVA) episode titled Shinryaku!! Ika Musume was bundled with the 12th manga volume released on August 8, 2012,[13] and a second OVA was released with the 14th manga volume on June 7, 2013.[14][15] Crunchyroll began streaming the OVAs in February 2014.[16] A third OVA was released as a Blu-ray Disc bundled with the 17th manga volume on September 9, 2014.[17]

Media Blasters licensed the anime in North America under the title Squid Girl. The first season was released on two DVD volumes on September 27 and December 6, 2011, respectively,[18][19] followed by a Blu-ray Disc release on March 13, 2012.[20] Media Blasters originally planned to release the second season,[21] but no longer plans to do so.[22] Both anime seasons and the OVAs were later licensed by Sentai Filmworks in 2016.[23] The first season was released on DVD in the United Kingdom by Manga Entertainment on August 13, 2012.[24] An English dubbed version of both anime seasons airs on Animax Asia across Southeast Asia.[25]


For the first anime series, the opening theme is "Shinryaku no Susume" (侵略ノススメ☆, Let's Invade!) by Ultra-Prism with Hisako Kanemoto, which was released on October 27, 2010, and the ending theme is "Metame Rhythm" (メタメリズム Metamerizumu) by Kanae Itō, which was released on November 26, 2010. A character song, "Ika Aisu Tabe na Ika?" (イ・カ・ア・イ・ス食べなイカ?, Won't You Eat Squid Ice Cream?), sung by Kanemoto, was released on July 6, 2011 bundled with a DVD music video.[26] For the second season, the opening theme is "High Powered" by Sphere, and the ending theme is "Kimi o Shiru Koto" (君を知ること, Learning About You) by Kanemoto.[27] For the OVAs, the opening theme is "Let's Shinryaku Time!" (Let's☆侵略タイム! Let's Shinryaku Taimu) by Ultra-Prism, and the ending theme is "Puzzle" (パズル Pazuru) by Itō for the first two OVAs, and "Miser's Dream" (マイザーズドリーム Maizāzu Dorīmu) by Itō for the third.[28]


A collaboration with Nintendo's Splatoon video game has been announced. Along with collaboration artwork by Anbe posted on the official Japanese Twitter account,[29] free clothing items based on Squid Girl's outfit were released for the game on August 6, 2015.[30][31][32]


  1. "週刊少年チャンピオン 2007年No.35" (in Japanese). Akita Shoten. Retrieved March 9, 2016.
  2. "Squid Girl/Shinryaku! Ika Musume Manga Ends on February 25". Anime News Network. February 17, 2016. Retrieved February 17, 2016.
  3. "週刊少年チャンピオン 2016年No.13" (in Japanese). Akita Shoten. Retrieved March 9, 2016.
  4. 侵略! イカ娘(1) (少年チャンピオン・コミックス) (in Japanese). Amazon.co.jp. Retrieved June 15, 2014.
  5. 侵略! イカ娘(20) (少年チャンピオン・コミックス) (in Japanese). Amazon.co.jp. Retrieved January 3, 2016.
  6. "Squid Girl/Shinryaku! Ika Musume Manga's 22nd Volume Will Be Last". Anime News Network. January 8, 2016. Retrieved January 8, 2016.
  7. 侵略!花枝娘 01 (in Chinese). Chingwin Publishing Group. Retrieved October 4, 2013.
  8. 侵略!花枝娘 15 (in Chinese). Chingwin Publishing Group. Retrieved June 15, 2014.
  9. "News: Ika Musume BD/DVD 5 & 6 to Include Mini Episodes". Anime News Network. November 22, 2010. Retrieved March 5, 2011.
  10. "2nd Ika Musume/Squid Girl Season's Title, Staff Listed". Anime News Network. May 24, 2011. Retrieved March 11, 2013.
  11. "Ika Musume/Squid Girl Sequel to Debut on September 26". Anime News Network. August 23, 2011. Retrieved March 11, 2013.
  12. "Crunchyroll Confirms Stream of Squid Girl Season 2". Anime News Network. September 26, 2011. Retrieved March 11, 2013.
  13. "Squid Girl Manga to Bundle New Original Anime DVD". Anime News Network. March 13, 2012. Retrieved March 11, 2013.
  14. "Squid Girl Manga to Bundle 2nd Original Anime DVD". Anime News Network. January 4, 2013. Retrieved March 11, 2013.
  15. "「侵略! イカ娘」14巻オリジナルアニメDVD付限定版 (少年チャンピオン・コミックス)" (in Japanese). Amazon.co.jp. Retrieved June 7, 2013.
  16. "Crunchyroll Streams Squid Girl Original Anime DVDs". Anime News Network. February 12, 2014. Retrieved February 12, 2014.
  17. "Squid Girl Manga Gets New Original Video Anime in September". Anime News Network. February 24, 2014. Retrieved February 24, 2014.
  18. "Media Blasters Licenses Squid Girl on DVD". Anime News Network. June 14, 2011. Retrieved March 11, 2013.
  19. "Media Blasters Delays Squid Girl Part 2 to December 6". Anime News Network. November 8, 2011. Retrieved March 11, 2013.
  20. "Media Blasters to Release 1st Squid Girl Season on BD". Anime News Network. November 14, 2011. Retrieved March 11, 2013.
  21. "Media Blasters Plans Release for Squid Girl Season 2 TV Anime". Anime News Network. March 19, 2012. Retrieved March 11, 2013.
  22. "Media Blasters No Longer Has Rights to Bakuman, Kenshin, Berserk Anime". Anime News Network. March 8, 2013. Retrieved July 24, 2013.
  23. "Sentai Filmworks Licenses Squid Girl Anime". Anime News Network. October 4, 2016. Retrieved October 4, 2016.
  24. "Puella Magi Madoka Magica and Panty and Stocking Announced by Manga". Anime News Network. March 31, 2012. Retrieved March 11, 2013.
  25. "The Squid Girl". Animax Asia. Retrieved March 15, 2015.
  26. "Ika Musume/Squid Girl Music Video's Preview Streamed". Anime News Network. June 21, 2011. Retrieved March 11, 2013.
  27. "Sphere, Hisako Kanemoto Sing Squid Girl Sequel's Themes". Anime News Network. September 17, 2011. Retrieved March 11, 2013.
  28. "Kanae Itō to Perform Squid Girl OAD Theme Song". Anime News Network. May 21, 2012. Retrieved March 11, 2013.
  29. "Splatoon x Ika Musume collaboration art". Nintendo (in Japanese). Twitter. May 27, 2015. Retrieved June 4, 2015.
  30. "Squid Girl Teams Up with Splatoon Inkling". Anime News Network. May 28, 2015. Retrieved June 3, 2015.
  31. "Splatoon Will Get Fresh With A Squid Girl Costume This August". Siliconera. June 3, 2015. Retrieved June 4, 2015.
  32. "Splatoon – Squid Girl outfit confirmed for North America". Nintendo Everything. August 5, 2015. Retrieved August 6, 2015.
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