Gonna be the Twin-Tail!!#Wormgildy

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 {{nihongo|twintail warrior|ツインテイルズ関係者|tsuinteiruzu kankei-sha}} branded Tail Red.

;{{nihongo|Soji Mitsuka|観束 総二|Mitsuka Soji|extra2=/}} {{nihongo|Tail Red|テイルレッド|Teiru Reddo}}

:Soji (male) {{Voiced by|Nobunaga Shimazaki|Austin Tindle}}

:Souji (female)/Tail Red {{Voiced by|Sumire Uesaka|Bryn Apprill}}{{Cite web|url=https://www.animenewsnetwork.com/news/2016-04-23/funimation-reveals-gonna-be-the-twin-tail-anime-dub-cast/.101377|title=Funimation Reveals Gonna be the Twin-Tail!! Anime's Dub Cast|website=Anime News Network|language=en|access-date=2019-04-12}}

: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 {{nihongo|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.

;{{nihongo|Aika Tsube|津辺 愛香|Tsube Aika|extra2=/}} {{nihongo|Tail Blue|テイルブルー|Teiru Burū}}

:{{Voiced by|Yūka Aisaka|Sarah Wiedenheft}}

: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 {{nihongo|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.

;{{nihongo|Erina Shindō|神堂 慧理那|Shindō Erina|extra2=/}} {{nihongo|Tail Yellow|テイルイエロー|Teiru Ierō}}

:{{Voiced by|Chinatsu Akasaki|Mikaela Krantz}}

:The student council president of Yōgetsu Private Academy. Known as Tail Yellow in her transformed state, her weapon is {{nihongo|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.

;{{nihongo|Twoearle|トゥアール|Tuāru|extra2=/}} {{nihongo|Tail White|テイルホワイト|Teiru Howaito}}

:{{Voiced by|Maaya Uchida|Morgan Garrett}}

: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.

;{{nihongo|Īsuna|イースナ|Īsuna|extra2=/}} {{nihongo|Anko Īsuna|善沙 闇子|Īsuna Anko|extra2=/}} {{nihongo|Tail Black|テイルブラック|Teiru Burakku|extra2=/}} {{nihongo|Dark Grasper or Dark Glassper|ダークグラスパー|Dāku Gurasupā}}

:{{Voiced by|Yōko Hikasa|Leah Clark}}

: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 {{nihongo|Īsuna|イースナ|Īsuna}}. But when she works as a singer on earth, she use the name {{nihongo|Anko Īsuna|善沙 闇子|Īsuna Anko}}.

;{{nihongo|Miharu Mitsuka|観束 未春|Mitsuka Miharu}}

:{{Voiced by|Hiromi Igarashi|Jennifer Green}}

:Soji's widowed mother and the owner of the restaurant {{nihongo|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".

;{{nihongo|Mikoto Sakuragawa|桜川 尊|Sakuragawa Mikoto}}

:{{Voiced by|M・A・O|Michelle Rojas}}

: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.

;{{nihongo|Mega Neptune Mk. II|メガ・ネプチューン＝MK.II|Mega Nepuchūn Māku Tsū}}

:{{Voiced by|Yukari Tamura|Tia Ballard}}

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

;{{nihongo|Twin-Tail God|ツインテール合同|Tsuintēru Godo}}

:{{Voiced by|Shuichi Ikeda|Kent Williams}}

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

;{{nihongo|Strawberry Twin|ストロベリーツイン|Sutoroberī Tsuin}}

:{{voiced by|Rie Kugimiya|Felecia Angelle}}

A high school girl whom Soji rescued.

;{{nihongo|Emu Shindō|神堂 慧夢|Shindō Emu}}

:{{voiced by|Kikuko Inoue|Cynthia Cranz}}

: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.

{{nihongo|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:

;{{nihongo|Dragguildy|ドラグギルディ|Doragugirudi|}}

:{{Voiced by|Tetsu Inada|Chris Rager}}

:The leader of the Ultimegil with a twintail fetish.

;{{nihongo|Lizardguildy|リザドギルディ|Rizadogirudi|}}

:{{Voiced by|Tesshō Genda|Cris George}}

:An Elemelion soldier with a doll-holding girl fetish.

;Turtleguildy

:{{Voiced by|Takaya Kuroda|Greg Ayres}}

:An Elemelion soldier with a bloomer fetish.

;Foxguildy

:{{Voiced by|Toshihiko Seki|Eric Vale}}

:An Elemelion soldier with a ribbon fetish.

;Swangildy

:{{Voiced by|Nobuyuki Hiyama|Aaron Roberts}}

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

;Tigerguildy

:{{voiced by|Kenichirou Matsuda|Jeff Johnson}}

:An Elemelion soldier with a swimsuit fetish.

;Sparrowguildy

:{{Voiced by|Chō|Phil Parsons}}

;Krakeguildy

:{{Voiced by|Jūrōta Kosugi|Jeremy Inman}}

:An Elemelion soldier with a flat chest fetish.

;Leviaguildy

:{{Voiced by|Toru Okawa|Charles C. Campbell}}

:An Elemelion soldier with a big breast fetish.

;Buffaloguildy

:{{Voiced by|Ryōta Takeuchi|Brandon Potter}}

:An Elemelion soldier with a giant breast fetish.

;Crabguildy

:{{Voiced by|Nobunaga Shimazaki|Chris Guerrero}}

:An Elemelion soldier with a backneck fetish.

;{{nihongo|Papillonguildy|パピヨンギルディ|Papiyongirudi|}}

:{{Voiced by|Shin-ichiro Miki|J. Michael Tatum}}

:An Elemelion soldier with a lip fetish.

;Alligatorguildy

:{{Voiced by|Hidefumi Takemoto|Marcus D. Stimac}}

;Hedgehogguildy

:{{Voiced by|Kenta Sasa|Garret Storms}}

;Kerberosguildy

:{{Voiced by|Kanehira Yamamoto|Chuck Huber}}

:An Elemelion soldier with a braid fetish.

;{{nihongo|Owlguildy|オウルギルディ|Ōrugirudi|}}

:{{Voiced by|Mitsuo Iwata|Barry Yandell}}

:An Elemelion soldier with a literature fetish.

;Spiderguildy

:{{Voiced by|Shō Hayami|David Wald}}

: An Elemelion soldier with a male crossdressing fetish.

;Fleagildy

:{{Voiced by|Taiten Kusunoki|Ian Sinclair}}

: An Elemelion soldier with a leg fetish.

;Wormguildy

:{{Voiced by|Mika Kanai|Alex Moore}}

: An Elemelion soldier with a crossdressing fetish.

;Snailguildy

:{{Voiced by|Nobutoshi Canna|Tyson Rinehart}}

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 {{Nihongo|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.{{cite web|url=http://gagaga-lululu.jp/gagaga/grandprix/06.html|script-title=ja:ガガガ文庫:小学館ライトノベル大賞|trans-title=Gagaga Bunko: Shogakukan Light Novel Prize|publisher=Shogakukan|access-date=December 16, 2013|language=ja|archive-url=https://web.archive.org/web/20160304211740/http://www.gagaga-lululu.jp/gagaga/grandprix/06.html|archive-date=March 4, 2016|url-status=dead}} 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.{{cite web |last1=Pineda |first1=Rafael Antonio |title=Final Gonna be the Twin-Tail!! Light Novel Volume Listed in October |url=https://www.animenewsnetwork.com/news/2018-09-04/final-gonna-be-the-twin-tail-light-novel-volume-listed-in-october/.136311 |website=Anime News Network |access-date=September 10, 2018}} However, a 17th volume was released on March 19, 2019.{{Cite book|title=俺、ツインテールになります。 (17) (ガガガ文庫)|id={{ASIN|4094517766|country=jp}}}} 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.

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| OriginalRelDate = June 19, 2012{{cite web|url=https://www.shogakukan.co.jp/books/09451346|script-title=ja:俺、ツインテールになります。|trans-title=Ore, Twintail ni Narimasu.|publisher=Shogakukan|access-date=June 18, 2014|language=ja}}

| OriginalISBN = 978-4-09-451346-2

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| VolumeNumber = 2

| OriginalRelDate = November 20, 2012{{cite web|url=https://www.shogakukan.co.jp/books/09451375|script-title=ja:俺、ツインテールになります。２|trans-title=Ore, Twintail ni Narimasu. 2|publisher=Shogakukan|access-date=June 18, 2014|language=ja}}

| OriginalISBN = 978-4-09-451375-2

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| VolumeNumber = 3

| OriginalRelDate = March 19, 2013{{cite web|url=https://www.shogakukan.co.jp/books/09451398|script-title=ja:俺、ツインテールになります。３|trans-title=Ore, Twintail ni Narimasu. 3|publisher=Shogakukan|access-date=June 18, 2014|language=ja}}

| OriginalISBN = 978-4-09-451398-1

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| VolumeNumber = 4

| OriginalRelDate = July 18, 2013{{cite web|url=https://www.shogakukan.co.jp/books/09451424|script-title=ja:俺、ツインテールになります。４|trans-title=Ore, Twintail ni Narimasu. 4|publisher=Shogakukan|access-date=June 18, 2014|language=ja}}

| OriginalISBN = 978-4-09-451424-7

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| VolumeNumber = 5

| OriginalRelDate = December 18, 2013{{cite web|url=https://www.shogakukan.co.jp/books/09451454|script-title=ja:俺、ツインテールになります。５|trans-title=Ore, Twintail ni Narimasu. 5|publisher=Shogakukan|access-date=June 18, 2014|language=ja}}

| OriginalISBN = 978-4-09-451454-4

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| VolumeNumber = 6

| OriginalRelDate = June 18, 2014{{cite web|url=https://www.shogakukan.co.jp/books/09451491|script-title=ja:俺、ツインテールになります。６|trans-title=Ore, Twintail ni Narimasu. 6|publisher=Shogakukan|access-date=June 18, 2014|language=ja}}

| OriginalISBN = 978-4-09-451491-9

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| VolumeNumber = 7

| OriginalRelDate = September 18, 2014{{cite web|url=https://www.shogakukan.co.jp/books/09451508|script-title=ja:俺、ツインテールになります。７|trans-title=Ore, Twintail ni Narimasu. 7|publisher=Shogakukan|access-date=September 29, 2014|language=ja}}

| OriginalISBN = 978-4-09-451508-4

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| VolumeNumber = 8

| OriginalRelDate = December 18, 2014{{cite web|url=https://www.shogakukan.co.jp/books/09451524|script-title=ja:俺、ツインテールになります。８|trans-title=Ore, Twintail ni Narimasu. 8|publisher=Shogakukan|access-date=December 27, 2014|language=ja}}

| OriginalISBN = 978-4-09-451524-4

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| VolumeNumber = 9

| OriginalRelDate = April 17, 2015{{cite web|url=https://www.shogakukan.co.jp/books/09451543|script-title=ja:俺、ツインテールになります。９|trans-title=Ore, Twintail ni Narimasu. 9|publisher=Shogakukan|access-date=May 2, 2015|language=ja}}

| OriginalISBN = 978-4-09-451543-5

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| VolumeNumber = 10

| OriginalRelDate = October 20, 2015{{cite web|url=https://www.shogakukan.co.jp/books/09451576|script-title=ja:俺、ツインテールになります。 10|trans-title=Ore, Twintail ni Narimasu. 10|publisher=Shogakukan|access-date=November 10, 2015|language=ja}}

| OriginalISBN = 978-4-09-451576-3

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| VolumeNumber = 11

| OriginalRelDate = March 18, 2016{{cite web|url=https://www.shogakukan.co.jp/books/09451599|script-title=ja:俺、ツインテールになります。 11|trans-title=Ore, Twintail ni Narimasu. 11|publisher=Shogakukan|access-date=March 23, 2016|language=ja}}

| OriginalISBN = 978-4-09-451599-2

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| VolumeNumber = 12

| OriginalRelDate = October 18, 2016{{cite web|url=https://www.shogakukan.co.jp/books/09451635|script-title=ja:俺、ツインテールになります。 12|trans-title=Ore, Twintail ni Narimasu. 12|publisher=Shogakukan|access-date=November 19, 2016|language=ja}}

| OriginalISBN = 978-4-09-451635-7

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| VolumeNumber = 13

| OriginalRelDate = August 18, 2017{{cite web|url=https://www.shogakukan.co.jp/books/09451692|script-title=ja:俺、ツインテールになります。 13|trans-title=Ore, Twintail ni Narimasu. 13|publisher=Shogakukan|access-date=January 3, 2018|language=ja}}

| OriginalISBN = 978-4-09-451692-0

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| VolumeNumber = 14

| OriginalRelDate = December 19, 2017{{cite web|url=https://www.shogakukan.co.jp/books/09451711|script-title=ja:俺、ツインテールになります。 14|trans-title=Ore, Twintail ni Narimasu. 14|publisher=Shogakukan|access-date=January 3, 2018|language=ja}}

| OriginalISBN = 978-4-09-451711-8

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| VolumeNumber = 15

| OriginalRelDate = April 18, 2018{{cite web|url=https://www.shogakukan.co.jp/books/09451729|script-title=ja:俺、ツインテールになります。 15|trans-title=Ore, Twintail ni Narimasu. 15|publisher=Shogakukan|access-date=April 17, 2019|language=ja}}

| OriginalISBN = 978-4-09-451729-3

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| VolumeNumber = 16

| OriginalRelDate = October 18, 2018{{cite web|url=https://www.shogakukan.co.jp/books/09451754|script-title=ja:俺、ツインテールになります。 16|trans-title=Ore, Twintail ni Narimasu. 16|publisher=Shogakukan|access-date=April 17, 2019|language=ja}}

| OriginalISBN = 978-4-09-451754-5

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| VolumeNumber = 17

| OriginalRelDate = March 19, 2019{{cite web|url=https://www.shogakukan.co.jp/books/09451776|script-title=ja:俺、ツインテールになります。 17|trans-title=Ore, Twintail ni Narimasu. 17|publisher=Shogakukan|access-date=April 17, 2019|language=ja}}

| OriginalISBN = 978-4-09-451776-7

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| VolumeNumber = 18

| OriginalRelDate = September 18, 2019{{cite web|url=https://www.shogakukan.co.jp/books/09451809|script-title=ja:俺、ツインテールになります。 18|trans-title=Ore, Twintail ni Narimasu. 18|publisher=Shogakukan|access-date=February 28, 2020|language=ja}}

| OriginalISBN = 978-4-09-451809-2

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| VolumeNumber = 19

| OriginalRelDate = February 18, 2020{{cite web|url=https://www.shogakukan.co.jp/books/09451829|script-title=ja:俺、ツインテールになります。 19|trans-title=Ore, Twintail ni Narimasu. 19|publisher=Shogakukan|access-date=February 28, 2020|language=ja}}

| OriginalISBN = 978-4-09-451829-0

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A manga adaptation titled {{nihongo|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.{{cite web |title=俺、ツインテールになります。π |url=https://magazine.jp.square-enix.com/biggangan/introduction/ore_twintail/ |publisher=Square Enix |access-date=November 5, 2020 |language=ja}}

An anime television series adaptation produced by Production IMS and directed by {{ill|Hiroyuki Kanbe|ja|神戸洋行}}, aired in Japan from October 9 to December 25, 2014. The opening theme is {{Nihongo|"Gimme! Revolution"|ギミー!レボリューション}} by Maaya Uchida. The ending theme is {{Nihongo|"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,{{cite web|url=http://www.animenewsnetwork.com/news/2014-10-03/funimation-streams-gonna-be-the-twin-tails-ushinawareta-mirai-o-motomete-daitoshokan-no-hitsujikai-garo-bahamut-donten-ni-warau-lord-marksman-and-vanadis/.79536|title=Funimation Streams Gonna be the Twin-Tails!!, Ushinawareta Mirai o Motomete, Daitoshokan no Hitsujikai, Garo, Bahamut, Donten ni Warau, Lord Marksman & Vanadis|publisher=Anime News Network|date=October 3, 2014|access-date=October 3, 2014}} and in the Middle East, North Africa, and Europe (excluding United Kingdom and Scandinavia) by Crunchyroll,{{cite web|url=http://www.crunchyroll.com/anime-news/2014/10/08/crunchyroll-to-stream-gonna-be-the-twin-tail-anime|title=Crunchyroll to Stream "Gonna Be the Twin-Tail!!" Anime|publisher=Crunchyroll|date=October 8, 2014|access-date=October 12, 2014}} and AnimeLab in Australia and New Zealand.{{cite web|url=http://www.animenewsnetwork.com/news/2015-02-21/animelab-adds-five-new-series-including-gonna-be-the-twin-tail-and-dragonar-academy/.85222|title=AnimeLab adds Five New Series including Gonna Be the Twin-Tail!! and Dragonar Academy|date=February 21, 2015|access-date=February 23, 2016}}

{{reflist|30em}}

• {{Official website|http://www.shogakukan.co.jp/books/detail/_isbn_9784094513462/|Official Shogakukan website}} {{in lang|ja}}
• {{Official website|http://www.tbs.co.jp/anime/ore_twi/|TBS anime website}} {{in lang|ja}}
• {{ann|anime|16132}}

{{Monthly Big Gangan}}

{{Production IMS}}

Category:2012 Japanese novels

Category:Anime and manga based on light novels

Category:Funimation

Category:Gagaga Bunko

Category:Gangan Comics manga

Category:Light novels

Category:Magical girl anime and manga

Category:Production IMS

Category:Seinen manga

Category:Shogakukan franchises

Category:Television shows based on light novels

Category:TBS Television (Japan) original programming

Category:Transforming heroes

Category:Transgender-related_anime_and_manga