Mysterious Girlfriend X (2012)

A quirky Japanese anime that transforms an unusual supernatural bond between two high school students into a surprisingly heartfelt romance.

Mysterious Girlfriend X - Series Information

  • Original Title: 謎の彼女X
  • First Air Year: 2012
  • Last Air Year: 2012
  • Type: TV Series
  • Genres: Animation, Drama, Comedy, Sci-Fi, Fantasy
  • Content Rating (US): TV-MA
  • Episode Runtime: Average runtime per episode (26 minutes)
  • Number of Seasons: 1
  • Number of Episodes: 13
  • Status: Ended
  • Original Language: Japanese
  • Spoken Languages: Japanese
  • First Air Date: April 8, 2012 (United States - TV-MA), April 8, 2012 (United Kingdom - 15), April 8, 2012 (Germany - 16), April 8, 2012 (Australia - M), April 8, 2012 (Brazil - 16)
  • Networks: Tokyo MX
  • Alternative Titles: 迷之少女X (CN), 謎の彼女X (JP), Mysterious Girlfriend X (UK)
  • Production Companies: Hoods Entertainment, Kodansha, Starchild Records
  • Production Countries: Japan

Mysterious Girlfriend X - Plot

Akira is a normal high school boy, but he nevertheless impulsively licks some drool left by the mysterious transfer student Mikoto. The next day he falls asleep with an inexplicable fever. After five days Mikoto suddenly comes to visit, and makes him consume her drool. The fever instantly vanishes, and Mikoto explains that he's suffering from "love sickness." She can transmit emotions through her drool, and the two of them are now bound together.

Mysterious Girlfriend X - Trailer

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Mysterious Girlfriend X - Cast & Crew

Main Cast

  • Miyu Irino
  • Yuki Kaji
  • Ayako Yoshitani
  • Yu Shimamura
  • Ryo Hirohashi
  • Misato Fukuen

Writers

  • Deko Akao

Mysterious Girlfriend X - FAQs

What is the drool bond concept in Mysterious Girlfriend X?

The drool bond is the show's central supernatural hook: when Akira tastes Mikoto's saliva, he becomes emotionally and physically linked to her. Through this unusual connection, they can share feelings and sensations, turning an otherwise bizarre premise into a surprisingly tender exploration of first love and intimacy.

Is Mysterious Girlfriend X based on a manga?

The series adapts Riichi Ueshiba's manga of the same name, originally serialized in Kodansha's Monthly Afternoon magazine from 2004 to 2014. The manga ran for 92 chapters across 11 volumes, and the anime covers the early arcs of the story, staying faithful to the source material's quirky romantic tone.

Is Mysterious Girlfriend X worth watching for anime fans?

For fans of unconventional romance anime, it's a genuinely charming watch. The series takes an absurd premise and handles it with surprising sincerity and warmth. The animation by Hoods Entertainment has a distinctive retro aesthetic, and the slow-burn relationship between Akira and Mikoto gives the show real emotional depth.

Where can you stream Mysterious Girlfriend X online?

Streaming availability for Mysterious Girlfriend X varies by region. Check JustWatch for the most up-to-date viewing options in your area, including any subscription, rental, or purchase platforms currently carrying the series.

Who voices the main characters in Mysterious Girlfriend X?

Miyu Irino voices protagonist Tsubaki Akira, while Ayako Yoshitani brings the enigmatic Urabe Mikoto to life. Yuki Kaji plays best friend Ueno Kouhei, Yu Shimamura voices Hayakawa Aika, Ryo Hirohashi plays Oka Ayuko, and Misato Fukuen rounds out the cast as Tsubaki Youko.

How many episodes does Mysterious Girlfriend X have?

The main series consists of 13 episodes, all of which aired in 2012. There is also a bonus OVA episode included in the specials season, bringing the total episode count to 14. Each episode runs approximately 26 minutes, making the full series a compact and easy binge.

How was Mysterious Girlfriend X received by critics and audiences?

The series earned a devoted niche following for its bold, unconventional approach to romance. Critics noted its retro visual style and willingness to lean into its strange premise without apology. Audiences who appreciated slow-burn, emotionally grounded storytelling responded warmly, though its ecchi elements made it a polarizing choice for casual viewers.

What anime series are similar to Mysterious Girlfriend X?

Fans of Mysterious Girlfriend X often enjoy The "Hentai" Prince and the Stony Cat (2013), Kanokon (2008), and The World God Only Knows (2010) for their blend of romance and supernatural elements. Kimagure Orange Road (1987) is also a beloved classic that shares the show's nostalgic, heartfelt approach to high school romance.

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