Nazo no Kanojo X

Mysterious Girlfriend X

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Alternative Titles

Synonyms: MGX
Japanese: 謎の彼女X
English: Mysterious Girlfriend X
German: Mysterious Girlfriend X
Spanish: Nazo no Kanojo X: Mysterious Girlfriend X
French: Mysterious Girlfriend X
More titles


Type: TV
Episodes: 13
Status: Finished Airing
Aired: Apr 8, 2012 to Jul 1, 2012
Premiered: Spring 2012
Broadcast: Sundays at 01:30 (JST)
Licensors: Sentai Filmworks
Source: Manga
Genre: RomanceRomance
Theme: SchoolSchool
Demographic: SeinenSeinen
Duration: 24 min. per ep.
Rating: PG-13 - Teens 13 or older


Score: 7.231 (scored by 149552149,552 users)
1 indicates a weighted score.
Ranked: #30862
2 based on the top anime page. Please note that 'Not yet aired' and 'R18+' titles are excluded.
Popularity: #755
Members: 321,198
Favorites: 3,238

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Ranked #3086Popularity #755Members 321,198
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Episodes: /13


First encounters are always memorable because regardless of the outcome, new experiences are sure to happen. For Akira Tsubaki, a young boy who knows next to nothing about girls, and new transfer student Mikoto Urabe, a mysterious girl who wears a cold facade, their first encounter takes a turn for the romantic.

Through a series of strange events, Tsubaki suddenly falls in love with Urabe, and together they develop a curious bond. Thus begins the romance and mystery of Urabe, a girl who seems to have a unique way of expressing her emotions.

[Written by MAL Rewrite]

Characters & Voice Actors

Hayakawa, Aika

Shimamura, Yuu

Tsubaki, Youko

Fukuen, Misato

Suwano, Ryouko

Fujimura, Ayumi

PE teacher

Satou, Kensuke


Eguchi, Takuya


Nagai, Masaru
Watanabe, Ayumu
Director, Episode Director, Storyboard
Mima, Masafumi
Sound Director
Yamauchi, Shigeyasu
Episode Director, Storyboard


Opening Theme

Apple Music
Amazon Music
Youtube Music
"Koi no Orchestra (恋のオーケストラ)" by Ayako Yoshitani

Ending Theme

"Houkago no Yakusoku (放課後の約束)" by Ayako Yoshitani


Mar 24, 2013
Now, now, now. I've been informed that certain people think that Nazo no Kanojo is ecchi. I've also been informed that a lot of people think it's bad that it has some originality. Well, guess what? It ain't so. Not often will you find an anime which revolves around drool, and this one did a damn fine job in doing so. So, you think that people sharing drool is nasty? Well, guess what, it is. Oh, but you watched only the first episode of the anime and took upon yourself to be an arse and immediatelly toss it aside? Well, guess what, not all anime ...
May 11, 2013
Mixed Feelings
Mysterious Girlfriend X is a show that’s pretty icky. There’s no getting around it. As a viewer, one always has options, one can always make decisions. So, if you’re planning on watching this show, you have to get past the hurdle that is the synopsis of this show. A high school student one day discovers the new transfer student asleep at her desk after school. After she hurriedly leaves, he sees a small pool of her drool on the desk, and for some unfathomable reason, he puts his finger in said drool, and takes this finger into his mouth. He licks her drool.

Without getting into ...
Jul 2, 2012
This is my first review and it's a bit spoilerish, mostly about the stuff that annoyed me there.

People told me Nazo no Kanojo was good, so I kept watching it despite the ridiculousness of the first episode. It was pretty weird and kind of stupid, but I've seen stuff that had more stupid premises and that was nonetheless very good.
This manga and as such the anime was written by someone who obviously has a drool fetish, but it shouldn't be enjoyable only by people who have that kind of fetish.

The first episode is about the protagonist feeling sick after tasting the girl's drool. The girl ...

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