Gonna be the Twin-Tail!!

Gonna be the Twin-Tail!!
First light novel volume cover featuring the main character Soji Mitsuka as Tail Red
俺、ツインテールになります。 (Ore, Tsuintēru ni Narimasu)
Genre	Action, comedy, magical girl, romance
Light novel
Written by	Yume Mizusawa
Illustrated by	Ayumu Kasuga
Published by	Shogakukan
Imprint	Gagaga Bunko
Demographic	Male
Original run	June 19, 2012 – November 18, 2022
Volumes	22
Manga
Written by	Yume Mizusawa
Illustrated by	Ryōta Yuzuki
Published by	Square Enix
Magazine	Monthly Big Gangan
Demographic	Seinen
Original run	2014 – 2015
Volumes	2
Anime television series
Directed by	Hiroyuki Kanbe
Produced by	Atsushi Yoshikawa Hirofumi Itō Junya Okamoto Reiichi Aoki Shigeaki Arima Tsuyoshi Tanaka
Written by	Naruhisa Arakawa
Music by	Yasuharu Takanashi
Studio	Production IMS
Licensed by	AUS: Madman Entertainment NA: Funimation
Original network	TBS, CBC, SUN, BS-TBS
English network	US: Funimation Channel
Original run	October 9, 2014 – December 25, 2014
Episodes	12

Gonna be the Twin-Tail!! (Japanese: 俺、ツインテールになります。, Hepburn: Ore, Tsuintēru ni Narimasu, lit. "I Will Become Twintailed"), abbreviated OreTwi (俺ツイ), 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. An anime adaptation produced by Production IMS aired in Japan from October 9 to December 25, 2014.

Plot

Soji Mitsuka, an ordinary high school boy, has an obsession for twintail hair. He meets a mysterious girl named Twoearle, who is from a parallel world. 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 twintail warrior (ツインテイルズ関係者, tsuinteiruzu kankei-sha) branded Tail Red.

Characters

Twintail Warriors

Soji Mitsuka (観束 総二, Mitsuka Soji) / Tail Red (テイルレッド, Teiru Reddo)

Soji (male) Voiced by: Nobunaga Shimazaki (Japanese); Austin Tindle (English)

Souji (female)/Tail Red Voiced by: Sumire Uesaka (Japanese); Bryn Apprill (English)

A high school boy attending Yōgetsu Private Academy obsessed with the twintail hairstyle. He later meets a mysterious beautiful girl named Twoearle, who appears before him from a parallel world. At the same time, monsters begin to invade town and attack everyone. In the midst of the chaos, Twoerle entrusted Soji with attribute power, This makes him transform into a twin tail warrior girl named Tail Red. Due to his alter ego becoming popular quickly after his debut and being the first twintail warrior, he is the leader of the Twintails. His weapon is Sword of Fire, Blazer Blade (炎の剣ブレイザーブレイド, Honō no Ken Bureizā Bureido). 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 Tyranno Guildy.

Aika Tsube (津辺 愛香, Tsube Aika) / Tail Blue (テイルブルー, Teiru Burū)

Voiced by: Yūka Aisaka (Japanese); Sarah Wiedenheft (English)

A high school girl and Soji's friend. She treats him like a brother and is rather overprotective of him, although it is revealed that she lives with him. Aika has a complex with her body, especially with a flat chest. She has a violent attitude toward Twoearle who often teases her. When she becomes a Twintail warrior, she was mostly hated by the public, until later when Tail Yellow joins the team. Aika has an outstanding ability of fighting as she was raised by her grandfather with martial arts. She is known as Tail Blue when she transforms, and her weapon is Spear of Water, Wave Lance (水の槍ウェイブランス, Mizu no Yari Weibu Ransu). She also gains Eternal Chain.

Erina Shindō (神堂 慧理那, Shindō Erina) / Tail Yellow (テイルイエロー, Teiru Ierō)

Voiced by: Chinatsu Akasaki (Japanese); Mikaela Krantz (English)

The student council president of Yōgetsu Private Academy. Known as Tail Yellow in her transformed state, her weapon is Gun of Lightning, Vortex Blaster (雷の銃ヴォルテックスブラスター, Kaminari no Jū Vorutekkusu Burasutā). She is a closet masochist and exhibitionist, and gets aroused when Soji calls her name (which usually triggers her to call him master). When she first became a Twintail warrior, she was a completely reckless fighter due to her maschostic ways. She was the only one of the twintails who at first could not use her power because of her denial, until she accepts it. Erina's twin-tail warrior form makes her whole body look a lot older and has a more well endowed figure. She also gains Absolute Chain.

Twoearle (トゥアール, Tuāru) / Tail White (テイルホワイト, Teiru Howaito)

Voiced by: Maaya Uchida (Japanese); Morgan Garrett (English)

A mysterious girl who comes from another planet and the first Tail Warrior. She enjoys teasing Aika and often ends up grievously injured for it. She fell in love with Soji at first sight and openly tries to seduce him with his mother's approval. After Soji defeats the first wave of attacks from the monsters, she joins Yōgetsu Private Academy as a student and calls herself Soji's relative. Before arriving on Earth, she was the original Tail Blue but gave up her twin-tail hair style to make the Tail Red gear after her world lost all attributes. She felt immense regret and shame for not saving her world and retired from fighting, as she felt she was no longer capable of defeating the Ultimegill, and passed her mantle on to Soji, feeling he would do much better than she did. After seeing Soji's determination and willingness to protect the innocent, she was happy knowing she made the right choice on appointing her successor. She regains her twin tail form and became Tail White but her form is limited to a few minutes. Though it compensates by being more powerful than Soji's Tail Red in the Ultimate Chain form.

Īsuna (イースナ, Īsuna) / Anko Īsuna (善沙 闇子, Īsuna Anko) / Tail Black (テイルブラック, Teiru Burakku) / Dark Grasper or Dark Glassper (ダークグラスパー, Dāku Gurasupā)

Voiced by: Yōko Hikasa (Japanese); Leah Clark (English)

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. In battle, 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 Īsuna (イースナ, Īsuna). But when she works as a singer on earth, she use the name Anko Īsuna (善沙 闇子, Īsuna Anko).

Others

Miharu Mitsuka (観束 未春, Mitsuka Miharu)

Voiced by: Hiromi Igarashi (Japanese); Jennifer Green (English)

Soji's widowed mother and the owner of the restaurant Adolescenza (アドレシェンツァ, Adoreshentsa). She is aware of her son's identity as Tail Red and supports him as she dreamed of being in a position. She does not mind Twoearle's attempts at seducing Soji and asks her to "make her son a man".

Mikoto Sakuragawa (桜川 尊, Sakuragawa Mikoto)

Voiced by: M・A・O (Japanese); Michelle Rojas (English)

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. This is a clear example that she is desperate to get married before reaching 30.

Mega Neptune Mk. II (メガ・ネプチューン＝MK.II, Mega Nepuchūn Māku Tsū)

Voiced by: Yukari Tamura (Japanese); Tia Ballard (English)

Anko's robot partner. Because her full name is long, Anko calls her Megane (Japanese for glasses) for short which she dislikes.

Twin-Tail God (ツインテール合同, Tsuintēru Godo)

Voiced by: Shuichi Ikeda (Japanese); Kent Williams (English)

An imaginary being within Soji's subconsciousness. He helps him restore his body.

Strawberry Twin (ストロベリーツイン, Sutoroberī Tsuin)

Voiced by: Rie Kugimiya (Japanese); Felecia Angelle (English)

A high school girl whom Soji rescued.

Emu Shindō (神堂 慧夢, Shindō Emu)

Voiced by: Kikuko Inoue (Japanese); Cynthia Cranz (English)

Erina's mother and the school's principal. She tries to fix arranged marriage meetings for Erina which the latter dislikes. When Soji stands up for Erina, Emu takes a liking to him and accepts him as Erina's future husband, to the shock of other girls.

Ultimegill

Ultimegil (アルティメギル, Arutimegiru) is an organization of phantom-monsters called Elemelion who travel different worlds, seeking a variety of "attributes". Although they are the villains of the story, 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 began to colonize and make plans to conquer Earth. Members include:

Dragguildy (ドラグギルディ, Doragugirudi)

Voiced by: Tetsu Inada (Japanese); Chris Rager (English)

The leader of the Ultimegil with a twintail fetish.

Lizardguildy (リザドギルディ, Rizadogirudi)

Voiced by: Tesshō Genda (Japanese); Cris George (English)

An Elemelion soldier with a doll-holding girl fetish.

Turtleguildy

Voiced by: Takaya Kuroda (Japanese); Greg Ayres (English)

An Elemelion soldier with a bloomer fetish.

Foxguildy

Voiced by: Toshihiko Seki (Japanese); Eric Vale (English)

An Elemelion soldier with a ribbon fetish.

Swangildy

Voiced by: Nobuyuki Hiyama (Japanese); Aaron Roberts (English)

An Elemelion soldier with the swan attached to the middle of the front face.

Tigerguildy

Voiced by: Kenichirou Matsuda (Japanese); Jeff Johnson (English)

An Elemelion soldier with a swimsuit fetish.

Sparrowguildy

Voiced by: Chō (Japanese); Phil Parsons (English)

Krakeguildy

Voiced by: Jūrōta Kosugi (Japanese); Jeremy Inman (English)

An Elemelion soldier with a flat chest fetish.

Leviaguildy

Voiced by: Toru Okawa (Japanese); Charles C. Campbell (English)

An Elemelion soldier with a big breast fetish.

Buffaloguildy

Voiced by: Ryōta Takeuchi (Japanese); Brandon Potter (English)

An Elemelion soldier with a giant breast fetish.

Crabguildy

Voiced by: Nobunaga Shimazaki (Japanese); Chris Guerrero (English)

An Elemelion soldier with a backneck fetish.

Papillonguildy (パピヨンギルディ, Papiyongirudi)

Voiced by: Shin-ichiro Miki (Japanese); J. Michael Tatum (English)

An Elemelion soldier with a lip fetish.

Alligatorguildy

Voiced by: Hidefumi Takemoto (Japanese); Marcus D. Stimac (English)

Hedgehogguildy

Voiced by: Kenta Sasa (Japanese); Garret Storms (English)

Kerberosguildy

Voiced by: Kanehira Yamamoto (Japanese); Chuck Huber (English)

An Elemelion soldier with a braid fetish.

Owlguildy (オウルギルディ, Ōrugirudi)

Voiced by: Mitsuo Iwata (Japanese); Barry Yandell (English)

An Elemelion soldier with a literature fetish.

Spiderguildy

Voiced by: Shō Hayami (Japanese); David Wald (English)

An Elemelion soldier with a male crossdressing fetish.

Fleagildy

Voiced by: Taiten Kusunoki (Japanese); Ian Sinclair (English)

An Elemelion soldier with a leg fetish.

Wormguildy

Voiced by: Mika Kanai (Japanese); Alex Moore (English)

An Elemelion soldier with a crossdressing fetish.

Snailguildy

Voiced by: Nobutoshi Canna (Japanese); Tyson Rinehart (English)

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 Sore wa, Twintail no Isekai (それは、ついんてーるの異世界), 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 series was originally slated to conclude in October 2018, with the release of its 16th volume. However, a 17th volume was released on March 19, 2019. The series ended with the 21st volume (22nd overall) on November 18, 2022.

The first volume was released in English on Shogkukan's novel app on January 23, 2025.

No.	Release date	ISBN
1	June 19, 2012	978-4-09-451346-2
2	November 20, 2012	978-4-09-451375-2
3	March 19, 2013	978-4-09-451398-1
4	July 18, 2013	978-4-09-451424-7
5	December 18, 2013	978-4-09-451454-4
6	June 18, 2014	978-4-09-451491-9
7	September 18, 2014	978-4-09-451508-4
8	December 18, 2014	978-4-09-451524-4
9	April 17, 2015	978-4-09-451543-5
10	October 20, 2015	978-4-09-451576-3
11	March 18, 2016	978-4-09-451599-2
12	October 18, 2016	978-4-09-451635-7
13	August 18, 2017	978-4-09-451692-0
14	December 19, 2017	978-4-09-451711-8
15	April 18, 2018	978-4-09-451729-3
16	October 18, 2018	978-4-09-451754-5
17	March 19, 2019	978-4-09-451776-7
18	September 18, 2019	978-4-09-451809-2
19	February 18, 2020	978-4-09-451829-0

Manga

A manga adaptation titled Ore, Twintail ni Narimasu π (俺、ツインテールになります。π) by Ryōta Suzuki was serialized in Square Enix's Monthly Big Gangan magazine, and was compiled into two tankōbon volumes.

Anime

An anime television series adaptation produced by Production IMS and directed by Hiroyuki Kanbe, aired in Japan from October 9 to December 25, 2014. The opening theme is "Gimme! Revolution" (ギミー!レボリューション) by Maaya Uchida. The ending theme is "Twin-Tail Dreamer!" (ツインテール・ドリーマー!) sung by the voice actresses of the three main heroines: Tail Red (Sumire Uesaka), Tail Blue (Yūka Aisaka), and Tail Yellow (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 United Kingdom and Scandinavia) by Crunchyroll, and AnimeLab in Australia and New Zealand.

Episode list

No.	Title	Directed by	Written by	Original air date
1	"Earth Is A Twintails Planet" Transliteration: "Chikyū wa Tsuintēru no Hoshi" (Japanese: 地球はツインテールの星)	Tōru Kitahata	Naruhisa Arakawa	October 9, 2014 (2014-10-09)
After meeting Twoearle, Soji Mitsuka receives a "Tail Gear" bracelet that transforms him into Tailred. He saves everyone and defeats Lizardguildy.
2	"A Twintail Mystery?!" Transliteration: "Tsuintēru na nazo" (Japanese: ツインテールな謎!?)	Yoshimasa Ishiya	Naruhisa Arakawa	October 16, 2014 (2014-10-16)
Soji and Aika Tsube begin living with Twoearle. They build a base underneath Soji's house. Tailred defeats Turtlegildy to save other girls.
3	"Cerulean Storm Waves! Tail Blue!" Transliteration: "Aoki dotō! Teiruburū" (Japanese: 青き怒濤！テイルブルー)	Masayuki Matsumoto	Naruhisa Arakawa	October 23, 2014 (2014-10-23)
Aika receives the blue bracelet, transforms into Tailblue, and defeats Foxguildy.
4	"Ferocity: Twin Battle" Transliteration: "Gekiretsu tsuinbatoru" (Japanese: 激烈ツインバトル)	Masashi Abe	Naruhisa Arakawa	October 30, 2014 (2014-10-30)
Erina tells Soji and Aika about having the club. Before Tailred and Tailblue defeat Dragguildy, he tells them that the celebrity statues can make everyone wanting twintails, thus making it easier for the organization to find Earth. Twoearle reveals she was once Tailblue, but her planet was destroyed due to her pride.
5	"The Third Twintailed Warrior!" Transliteration: "San'ninme no Tsuintēru!" (Japanese: 三人目の戦士(ツインテール)！)	Yoshimasa Ishiya	Masaki Wachi	November 6, 2014 (2014-11-06)
Erina begins to know about Soji and Aika's secret identity, when examining the bracelets invisible to normal people until transforming. While avoiding Crabguildy, Erina confirms the truth that Tailred is Soji. Erina receives the yellow bracelet and transforms into Tailyellow. Meanwhile, Ultimegil meets up with Dark Grasper.
6	"Break Release! Tail Yellow!" Transliteration: "Bureiku Rerīzu! Teiruierō" (Japanese: 完全解放(ブレイクレリーズ)！テイルイエロー)	Shū Watanabe	Masaki Wachi	November 13, 2014 (2014-11-13)
After Tailblue defeats Crabguildy and Leviaguildy, Tailyellow notices that she lacks power and has Tailred train her for the first battle. After Tailyellow defeats Krakeguildy, Dark Grasper arrives on Earth and meets up with the girls.
7	"Passionate Debut! Dark Grasper!" Transliteration: "Netsuretsu Debyū! Dāku Gurasupā" (Japanese: 熱烈見参(デビュー)！暗黒眼鏡女子(ダークグラスパー))	Masayuki Matsumoto	Naruhisa Arakawa	November 20, 2014 (2014-11-20)
Dark Grasper leaves Earth and reports to the organization about the girls. As Anko Īsuna, she attends the concert as a Japanese idol appearing on live television. Tailyellow defeats Papillonguildy, and Dark Grasper betrays and kills Kerberosguildy. Meanwhile, Emu tells Mikoto about Erina's upcoming marriage.
8	"Erina's First..." Transliteration: "Erina, Hajimete no..." (Japanese: 慧理那、はじめての...)	Tatsuma Minamikawa Tōru Kitahata	Masaki Wachi	November 27, 2014 (2014-11-27)
After Tailred defeats Owlguildy, Soji convinces Emu to let Erina keep fighting with her friends until the end. Anko uses her fame to spread news around Japan, but Soji discovers this and decides to end it.
9	"Smash It! Glass On in Chaotic Infinite!" Transliteration: "Uchiyabure! Kaoshikku Infinitto" (Japanese: 打ち破れ! 暗黒幻夢(カオシック・インフィニット))	Yōsuke Hashiguchi	Naruhisa Arakawa	December 4, 2014 (2014-12-04)
Dark Grasper learns that Twoearle is the one who made Soji a hero. Tailred, Tailblue, and Tailyellow interfere the concert, but they are cornered by Dark Grasper. Twoearle arrives in time to save the girls and confront Dark Grasper. After resisting the illusions, Tailred uses the combined counter-offensive power between herself, Tailblue, and Tailyellow, in order to overwhelm Dark Grasper. Before leaving with Mega Neptune Mk. II, Anko kisses Tailred.
10	"Why? Nothing Is Going Right For Me!" Transliteration: "Nazeda!? Ore, zetsufuchō" (Japanese: なぜだ！？俺、絶不調)	Masashi Abe	Masaki Wachi	December 11, 2014 (2014-12-11)
When Tailred, Tailblue, and Tailyellow meet Spiderguildy, he counterattacks the ability and overwhelms Tailred, before leaving. Soji notices that his body begins to change due to Anko's kiss, and loses his male form in his dream. After defeating Fleaguildy, Aika finds a girl identified as Soji.
11	"Red in Dire Straits!" Transliteration: "Reddo zettaizetsumei" (Japanese: レッド絶体絶命)	Yoshimasa Ishiya	Masaki Wachi	December 18, 2014 (2014-12-18)
Soji learns that the bracelet went malfunction despite the transformation and tries to live a life being a girl. Tailblue and Tailyellow defeat Wormguildy and Snailguildy at the stadium. Meanwhile, Spiderguildy transforms into Arachneguildy after a few days of resting.
12	"Long Live Twintails!" Transliteration: "Tsuintēru yo towa ni" (Japanese: ツインテールよ永遠に)	Tōru Kitahata Hiroyuki Kanbe	Naruhisa Arakawa	December 25, 2014 (2014-12-25)
Arachneguildy returns to Earth and turns everyone into twintails. However, this backfires, after they revert to normal and Tailred defeats him. Dark Grasper has the ship departing through outer space. After Soji reverts into a boy, he and the girls embark on a new life together.

External links

• Official Shogakukan website (in Japanese)
• TBS anime website (in Japanese)
• Gonna be the Twin-Tail!! (anime) at Anime News Network's encyclopedia