, abbreviated , is a Japanese light novel series written by Yume Mizusawa and illustrated by Ayumu Kasuga. Shogakukan has published 22 volumes under their Gagaga Bunko imprint since June 2012. It follows a trio of pigtail warriors saving Japan from galactic monsters. An anime adaptation produced by Production IMS aired in Japan from October 9 to December 25, 2014.
Plot High school boy Soji Mitsuka is obsessed with twintail hair. He meets a mysterious girl named Twoearle, who came from a parallel world to the planet Earth. When monsters appear and invade Japan, they feed off "attribute strength", the spiritual energy of humans. Twoearle entrusted Soji with Tail Gear, imaginary armor initiated by powerful twintail attributes. This allows Soji to transform into a girl and branded Tail Red.
Characters Twintail Warriors
Soji (male) Souji (female)/Tail Red A high school boy of Yōgetsu Private Academy obsessed with pigtail hairstyles. He later meets a scientist girl named Twoearle arriving on Earth. When galactic monsters invade Japan, Soji receives a bracelet from Twoearle and becomes a twin tail warrior named Tail Red. Due to his alter ego being a celebrity, Soji becomes the leader of the Twintails. His weapon is . In volume 4, he gained two power-up forms: Riser Chain and Faller Chain. He later gains Ultimate Chain, after regaining his Twintail Elémera, which he lost to Tyrannoguildy.
A high school girl and Soji's friend. She has a complex with a flat chest on her body. She dislikes Twoearle for teasing her. Aika becomes a Twintail warrior and joins the team. She is a martial artist raised by her grandfather. She is known as Tail Blue when she transforms, and her weapon is . She also gains Eternal Chain.
The student council president of Yōgetsu Private Academy. Known as Tail Yellow in her transformed state, her weapon is . She is a closet masochist and exhibitionist, and gets aroused when she meets Soji. While being a Twintail warrior, she becomes a reckless fighter due to her maschostic ways. She is the only one of the twintails who at first could not use her power because of her denial, until she accepts it. Erina's twintail warrior form makes her whole body look a lot older and has a more well endowed figure. She gains Absolute Chain.
A scientist girl who came from another planet and the first Twin Tail Warrior. She teases Aika sometimes and often ends up grievously injured for it. Twoearle becomes a relative to Soji and Aika, and works at Yōgetsu Private Academy. Before arriving on Earth, she was the original Tail Blue who sacrificed her power to make the Twin Tail gear after her parallel world lost all attributes. She has expressed regret from losing her former home to Ultimegill. Before Soji became a successor, Twoearle had a limited form as Tail White for a few minutes. Though it compensates by being powerful over Soji's Ultimate Chain form.
A girl from a different world, yet from the same place as Twoearle. She is secretly a big fan of Twoearle and stalks her often. After Twoearle arrives on Earth, she joined the Ultimegill organization and receives her alter ego Dark Grasper. After finding Twoearle, she betrayed Evil Gill. She is known as Tail Black. Her weapon is Darkness Grave Moebius, and her weapon when she was in the Evil Gill was Sickle Grave of Darkness. Her real name is . As an idol, she uses the name .
Others
Soji's widowed mother and the owner of the restaurant . She is aware of her son's identity and supports him as she dreamed of being in a position. She allows Twoearle to stay with Soji.
Erina's maid with an outstanding physical ability despite her job. At times, she works part time as a PE teacher for Yōgetsu Private Academy. She usually slips marriage registration forms in the boys' test slips with her name on them, or having Soji sign his name on it. It is clear that she is desperately looking and marrying someone before reaching 30.
Anko's robot partner. Due to her long name, Anko calls her Megane (Japanese for glasses) for short which she dislikes.
An imaginary being within Soji's subconsciousness. He helps him restore his body.
A high school girl whom Soji rescued.
Erina's mother and the school's principal.
Ultimegill is an organization of phantom-monsters called Elemelion who travel through different worlds, seeking a variety of "attributes". Although they are enemies of humanity, the majority of them are rather silly and comical and behave much like otakus, often admiring cute girls, collecting dolls, and even adoring the twintail heroines. Having discovered Earth is rich in "attributes", they colonize and make plans to conquer Earth. Members include:
The leader of the Ultimegil with a twintail fetish.
An Elemelion soldier with a doll-holding girl fetish.
An Elemelion soldier with a bloomer fetish.
An Elemelion soldier with a ribbon fetish.
An Elemelion soldier with the swan attached to the front face.
An Elemelion soldier with a swimsuit fetish.
An Elemelion soldier with a tentacle fetish.
An Elemelion soldier with a flat chest fetish.
An Elemelion soldier with a breast fetish.
An Elemelion soldier with a giant breast fetish.
An Elemelion soldier with a backneck fetish.
An Elemelion soldier with a lip fetish.
An Elemelion soldier with a spiky fetish.
An Elemelion soldier with a braid fetish.
An Elemelion soldier with a literature fetish.
An Elemelion soldier with a male crossdressing fetish.
An Elemelion soldier with a leg fetish.
An Elemelion soldier with a crossdressing fetish.
An Elemelion soldier with a snail shell.
Media Light novels Gonna be the Twin-Tail!! began as a light novel series, written by Yume Mizusawa with illustrations by Ayumu Kasuga. Mizusawa originally entered the first novel in the series, originally titled , into Shogakukan's sixth Shogakukan Light Novel Prize in 2011 and the novel won the judge's prize. The first novel was published by Shogakukan on June 19, 2012, under the Gagaga Bunko imprint, and fourteen novels were released on December 19, 2017.
The 16th volume of the series was released in October 2018, and the 17th volume on March 19, 2019. The series ended with the 21st volume (22nd overall) on November 18, 2022, while the first volume was released in English on Shogkukan's novel app on January 23, 2025.
Manga A manga adaptation titled by Ryōta Suzuki was serialized in Square Enix's Monthly Big Gangan magazine from August 25, 2014 to June 25, 2015, and was compiled into two tankōbon volumes.
Anime An anime television series adaptation produced by Production IMS and directed by , aired in Japan from October 9 to December 25, 2014. The opening theme is by Maaya Uchida. The ending theme is by Sumire Uesaka, Yūka Aisaka, and Chinatsu Akasaki. Both singles for the themes were released on October 22, 2014. The anime was licensed by Funimation in North America, and in the Middle East, North Africa, and Europe (excluding North America, Scandinavia, and United Kingdom) by Crunchyroll, and AnimeLab in Australia and New Zealand.
Episode list
References
External links