Nazo no Kanojo X
Mysterious Girlfriend X
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Nazo no Kanojo X

Alternative Titles

Japanese: 謎の彼女X
English: Mysterious Girlfriend X
More titles


Type: Manga
Volumes: 12
Chapters: 96
Status: Finished
Published: Aug 25, 2004 to Sep 25, 2014
Genres: Romance Romance, Ecchi Ecchi
Theme: School School
Demographic: Seinen Seinen
Serialization: Afternoon
Authors: Ueshiba, Riichi (Story & Art)


Score: 7.761 (scored by 2045620,456 users)
1 indicates a weighted score.
Ranked: #14342
2 based on the top manga page. Please note that 'R18+' titles are excluded.
Popularity: #372
Members: 44,192
Favorites: 2,030


Ranked #1434Popularity #372Members 44,192
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Volumes: /12
Chapters: /96
Available on Manga Store
Mysterious Girlfriend X
Volume 1


Akira Tsubaki is a normal high schooler who sits next to new transfer student Mikoto Urabe during classes. Her face half hidden by hair, Urabe earned a reputation as a weirdo on her first day of school when she started laughing loudly for no apparent reason in the middle of a class. She does not like to interact with her classmates and instead prefers to nap on her desk.

One day after school, Tsubaki finds Urabe sleeping on her desk and wakes her up. However, after Urabe goes home, he notices her drool on her desk and impulsively tastes it. A few days later, he is struck down by a fever and is visited by Urabe at his home. After confirming the fact that Tsubaki tasted her drool that day, she informs him that his fever is nothing but love sickness and that he is suffering from withdrawal symptoms of her drool. Thus, the two enter into a strange relationship where Urabe feeds Tsubaki her drool everyday to prevent any more sickness.

[Written by MAL Rewrite]


Nazo no Kanojo X was published in English as Mysterious Girlfriend X by Vertical Inc. under the Vertical Comics imprint in 2-in-1 omnibuses from March 15, 2016 to June 13, 2017. The series was digitally published in English by Crunchyroll.

Related Manga


Urabe, Mikoto
Tsubaki, Akira
Oka, Ayuko
Ueno, Kouhei
Imai, Momoka
Tsubaki, Youko
Hayakawa, Aika
Suwano, Ryouko


Jan 30, 2024
After reading the manga, I was happy; I hadn't felt this way for a long time after reading a manga. After some time, however, I was sad because there were no sequels or side stories. I have to commend the drawing style because I really like it. I would like to see this drawing style more often.The music? It was absolutely perfect. I have the opening song downloaded, and I listen to it when I'm commuting to work on public transportation.

I hope that someday I'll find a manga that brings a smile to my face :)

That's why I'm giving this book a 10/10; I believe ...
Jul 1, 2023
(First time so deal with it)

I really liked this one...

Plot: 9/10
When you think about it, the plot has nothing crazy and thats why I like it. Its interesting, well written and overall good. Its unique enough and just has quality. It knows what its doing and when a plot just knows what it is its a good plot in my book.

Characters: 10/10
I am gonna keep it real. I liked the characters and they were good but that was kinda where it ended. They are not too complex or anything when you look at it. So why did I gave them a 10? Because I love ...
Nov 18, 2014
Mixed Feelings
In the end, it was quite a letdown. I understand being modest, I really do, though I don't really have this trait myself. But there are limits for that too, there is a line between modest and choking. And this story really gets more on the choking side. Being a sucker for sweet romance, I am really sensitive of relationships develoment. So, if you are like that too - be warned, there's not enough!

There's nothing much to say about the story besides that. It rides the whole time on the kinky "drool" thing, even reuses it's own ideas as story in the story. Which is ...

Interest Stacks


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Recent Forum Discussion

Nazo no Kanojo x what chapter should I continue to, after the anime?
keragamming - Mar 10, 2014
5 repliesby LowGa1n »»
Nov 29, 2023 11:21 PM
Poll: Nazo no Kanojo X Chapter 92 Discussion ( 1 2 3 )
Stark700 - Sep 24, 2014
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Nazo no Kanojo X
Greencher - Jan 29, 2018
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Mysterious Girlfriend X and One Punch Man?
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What's your opinion on this manga?
danklolihunter - May 11, 2019
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Feb 3, 2022 7:43 AM