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Nazo no Kanojo X  
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One day, a strange transfer student appears before Tsubaki. Urabe Mikoto is an antisocial girl, whose hobby is just sleeping during class-breaks. One day, Tsubaki goes to wake her up and accidentally tastes her drool... and gets hooked on that!

After that, he starts going out with her and gets to know her better. Her second hobby, as it turns out, is carrying around scissors in her panties and cutting paper into flowers...


Related Series

Associated Names
Загадочная девушка Х
Kekasih Misteri X
Mysterious Girlfriend X

Groups Scanlating
Aizome Scans
Eval Powar

Latest Release(s)
c.88 by TKTranslate over 3 years ago
c.92 by Crunchyroll over 3 years ago
c.91 by Crunchyroll over 3 years ago
Search for all releases of this series

Status in Country of Origin
12 Volumes (Complete)

Completely Scanlated?

Anime Start/End Chapter
Starts at Starts at Vol 1, Chap 1
Ends at Ends at Vol 5, Chap 36

User Reviews

16 topics, 82 posts
Click here to view the forum

User Rating
Average: 8.1 / 10.0 (1160 votes)
Bayesian Average: 8.06 / 10.0
 27% (317 votes)
 19% (222 votes)
 22% (251 votes)
 16% (187 votes)
 7% (83 votes)
 3% (39 votes)
 2% (22 votes)
 1% (13 votes)
 1% (14 votes)
 1% (12 votes)

Last Updated
June 27th 2017, 8:59am PST



Category Recommendations





Original Publisher

Serialized In (magazine)
Afternoon (Kodansha)

Licensed (in English)

English Publisher
Vertical (6 Omnibus Volumes - Complete)

Activity Stats (vs. other series)
Weekly Pos #402 increased(+169)
Monthly Pos #712 increased(+85)
3 Month Pos #894 increased(+39)
6 Month Pos #998 decreased(-23)
Year Pos #991 decreased(-68)

List Stats
On 4166 reading lists
On 1053 wish lists
On 1008 completed lists
On 263 unfinished lists
On 418 custom lists

Note: You must be logged in to update information on this page.

Forum Posts
That ending pissed me off about 1 year ago
Mysterious Girlfriend X Ends Next Month over 3 years ago
Crunchyroll simulpubs of Nazo no Kanojo X over 4 years ago
Urabe fetishes over 5 years ago
Chapter 21 Spoiler/Frustration over 5 years ago

Click to view the forum

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User Comments [ Order by usefulness ]

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Lovingly Odd.   
Rating: 10.0 / 10.0
by SharpMonkey
September 6th, 2009, 11:13am
I actually really love this! I was originally put off by the whole drool thing and Urabe's personality, but it all just adds on to the story. I'm rather glad that Urabe doesn't have a completely anti-social and gloomy atmosphere around her.

All of the exciting encounters that Urabe and Tsubaki have make me all giddy and tingly. That's how an ecchi manga should be. This manga is just too cute!
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Interesting but slow   
Rating: 9.0 / 10.0
by badbob001
August 7th, 2009, 7:06am
The interesting title got my attention and I wasn't disappointed. Maybe it's because it's a monthly series, but the story and character development moves pretty slowly... almost to the point of being routine. I hope the story picks up since 'mysterious' is not that interesting if there is no substance behind it. Reminds me of a G-rated version of Sundome, another manga about a dominant mysterious girl.
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Slightly interesting and the humor is decent, but a bit repetitive   
Rating: N/A
by The Solipsist
July 10th, 2009, 4:02pm
The concept is alright. There's the stereotypical "boy-who's-a-complete-wimp-around-girls-and-embarassed-of-his-own-sex ual-urges" protagonist, but he's given a female interest who is an odd but forceful character, something that adds a bit of novelty. There's apparently some psycho-physical connection that occurs between these two and their drool. This is something which only requires a slight suspension of disbelief to enjoy, but the transferring of pain/cuts/bruises later on in chapters is a bit much. A few more hours in the mangaka's head could have fine-tuned the basic idea.

I found the gags funny for the first 15 or so chapters. The gags made full use of the concept's novelty, too, and were refreshing. But to be honest they really start striking like clockwork and after a while you know exactly when a specific gag is going to be used. Open mouth, insert finger, oh-no-what's-this-warm-feeling, scissors, oh so that's what you're thinking about, don't hug me, scissors, hey you don't hug me. This is where I have to agree with "hamburgers" review. It's ridiculous to have to ask your girlfriend for a hug. Not to mention most adolescent couples can't get their hands off each other. From what I understand the manga does this to create tension and to keep you reading: the girl states early on that the protagonist will be the one to take her virginity, so we, the reader, are kept wondering every step of the way when it's gonna happen. Every hug, every touch, puts the reader on his toes. Unfortunately, the ungodly amount of finger sucking required to churn the character development in this manga makes it frustrating to read, especially as you witness the protagonist forbidden from basic things like hugging and calling his girlfriend by her first name (I know the first name business is a japanese thing, but I'd say sharing entire emotional states is intimate enough...give the boy a break...). Sometimes I think this manga is just an overblown, elaborate parody of the whole "wimpy teen protagonist" genre.

The art has some personality and works to the gags. It's nothing special, but it works.

The pacing in particular has some issues, but I'd say this area depends on your tastes and how long you can put up with the protagonist per read.

Overall, I found myself reading this and enjoying it, despite my nitpicking and frustration. I'm hoping some interesting twist comes (that moon in the backgrounds comes to mind) as far as the mystical drool (no aliens, please), but I'm not getting my hopes up as this manga has been pretty light-hearted, aside from the fan service drops here and there.
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not a complete waste of my time   
Rating: 6.5 / 10.0
by hamburgers
June 2nd, 2009, 7:01pm
Hmm, where to start? Well, I've read the series up to chapter 35, so all my comments are based on what I've read so far. I will also say that when I begin reading a series, I read everything that's been released up to that point, unless a work is just so absolutely terrible that I'd rather burn it (not the case with this series, though). Also of note, I just finished reading Kurohime; whether or not that may have influenced my feelings about this series is left up to you.

When I read this series, I never feel 'romance in the air,' in a traditional sense at least, and I may be wrong for anticipating that, but it really is irritating. I may just be put off by the strangely sadomasochistic interaction between the two main characters; perhaps I'm unconsciously rejecting the female leads' complete control over the duo's relationship.

So, lets start the QQ'ing. The main characters are taking it far too slow for a relationship that started in such a purely physical way, and I find that to be counterintuitive and glaringly hypocritical of the mangaka and the two leads. Quite frankly, the prevalence of drool is a bit gross, but it doesn't detract from the story for being 'gross'. The fact that nearly all emotional interaction between the two leads is done via a physical means (drool), is an interesting concept, but in the end I feel that it is glorified fanservice. Admittedly, the fact that the mangaka's managed to make the fanservice serve a purpose within the series itself is laudable.

I was able to get into the story, but I'm able to do that with nearly every novel/manga/etc that I come across, so that doesn't mean a whole lot. But unlike other series, I never really 'liked' any of the characters a whole hell of a lot. Although the mangaka stays true to the name 'mysterious', he could have done a lot more exposition on either character until now. I find the female lead's aversion to letting the male lead touch her in any way, to be more disappointing, hypocritical, and selfish than it is interesting or mysterious. Asking your girlfriend for a hug? That's something I just couldn't wrap my head around, no matter how I tried, so cheers if you're into that kind of thing.

The series definitely improves in the later releases, but by this time, it was too late for me to retain a whole lot of enthusiasm.

The artwork leaves much to be desired; I've seen far better artwork in shounen works, let alone seinen works. What I'm saying is that the mangaka's drawing style is weirder than Eichoro Oda's in One Piece. If you couldn't wrap your head around that series' art, don't bother with this one, it'll just irritate you.

I only started reading this series since it was rated highly and because almost all the comments are positive, but I didn't really enjoy it. If you want a lot of fuzzy feelings, lulz, or a realistic romantic series (and no drool), look elsewhere.

This review is purely subjective and haphazardly constructed, but I hope it helps some of you make up your mind.
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Quite Good   
Rating: 9.0 / 10.0
by emperor26
March 10th, 2009, 9:17am
Mysterious Girlfriend X just stands out as being unusual but quite entertaining for a seinen manga.

The plot is quite intruiging, the characters each have their own personality and the drawing style is quite nice (though it something that would be found in a shonen manga).

The relationship between the two main protagonists stands out the most, and is quite interesting to see what directing it takes (and how long it will last).

Overall, I would recommend this Mysterious Girlfriend X in case anyone is trying to find a manga worth reading.
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...Instead of reading comments   
Rating: 10.0 / 10.0
by HumanoidInterface
February 1st, 2009, 7:50pm
You should be reading this.

Seriously. It's great. The art is very unique, the plot is unique, the characters are enjoyable.

... Last updated on February 1st, 2009, 7:51pm
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Weird, in a good way!   
Rating: 8.0 / 10.0
by 2wcp
January 7th, 2009, 5:47pm
This manga is quite peculiar for a romantic comedy. Well, it does a job well done in standing out among the rest! An exciting manga to read.
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Rating: 10.0 / 10.0
by Jheregreign
January 3rd, 2009, 11:55pm
I was not sure what to expect but for some reason I am loving this manga. As long as it continues this will easily be one of my favorites. Right now it is. Going a bit farther than most of your average romantic series.
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It's like porn   
Rating: 7.0 / 10.0
by CTD
December 10th, 2008, 7:25am
only they stop with the drooling part and some ecchi. Good if you have nothing better to read, but don't expect any fireworks(and no, i don't mean that it should be a full-blown hentai manga, only that the story is rather plain).
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Rating: 10.0 / 10.0
by Xero XIII
October 18th, 2008, 9:54pm
After reading the description for this series last year, it sounded so ridiculous that I had to check it out, and I've very glad I did.

The story is simple and engaging, and fairly unique. Each chapter is well written, and you can't help but have a bit of a smile on your face after you've finished reading one.

Who'd have thought a manga about drool would be this good?
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