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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
My Mysterious Girlfriend X
Mysterious Girlfriend X

Groups Scanlating
Aizome Scans
Eval Powar

Latest Release(s)
c.88 by TKTranslate (57d ago)
c.92 by Crunchyroll (156d ago)
c.91 by Crunchyroll (187d 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

15 topics, 81 posts
Click here to view the forum

User Rating
Average: 8.2 / 10.0 (1089 votes)
Bayesian Average: 8.16 / 10.0
 29% (312 votes)
 19% (209 votes)
 21% (231 votes)
 15% (168 votes)
 7% (78 votes)
 3% (36 votes)
 2% (21 votes)
 1% (10 votes)
 1% (12 votes)
 1% (12 votes)

Last Updated
December 28th 2014, 11:25am PST

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Category Recommendations





Original Publisher

Serialized In (magazine)
Afternoon (Kodansha)

Licensed (in English)

English Publisher

Activity Stats (vs. other series)
Weekly Pos #583 increased(+66)
Monthly Pos #669 decreased(-69)
3 Month Pos #651 decreased(-253)
6 Month Pos #266 decreased(-91)

List Stats
On 4359 reading lists
On 1007 wish lists
On 600 completed lists
On 232 unfinished lists
On 347 custom lists

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Forum Posts
Mysterious Girlfriend X Ends Next Month 120 days, 7 hours, 58 minutes ago
Crunchyroll simulpubs of Nazo no Kanojo X 381 days, 11 hours, 7 minutes ago
Urabe fetishes 836 days, 9 hours, 37 minutes ago
Chapter 21 Spoiler/Frustration 1012 days, 23 hours, 50 minutes ago
Timeline Confusion 1013 days, 0 hours, 6 minutes ago

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User Comments [ Order by usefulness ]

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Must be read carefully to appreciate   
Rating: N/A
by Manji88
March 24th, 2010, 7:01pm
First of all, I love this guy's art. His previous work (like Discommunication) was overwhelming--each panel looked like one of the occasional "dream sequences" he puts into X. Here he's opened up the space in his art, concentrating on the characters, and developed a new, lighter line with less spot black. And it's all a matter of taste, but I find his girls as cute as hell.
Some previous reviewers have commented negatively on things like how Urabe won't let him hug her, etc. But I disagree. Remember, Urabe said right at the beginning of the series that he's the man she's first going to have sex with. And as you see in the story, each step along the way is not only controlled by them, but, in a way, by their "bond." Urabe doesn't want to move ahead of where that mysterious "bond" wants them to be. I admit it's a little slow. You'd think that when she starts getting sexually excited due to the progression of the "bond," things might heat up a little more than they have. But it's just not "that kind of comic," apparently. Regardless, there are always lots of fun little stories and Ueshiba's fascination with how sexual relationships develop between juveniles provides him an opportunity to experiment, playing "what if?"
Fan service? Sure. But it is, after all, about the relationship between two teenagers who are "destined" to be sex partners, and a few panty shots are not exactly out of bounds. You've got to give the poor sex-starved boy something to get nosebleeds about, after all.
So far I've enjoyed the hell out of it, more than any romantic comedy I've read in years.
The recent Imai storyline has me a bit concerned about where's he's going, but it's fun to see Urabe be both reluctant (in her usual way) and and the same time kind of intrigued by the unique opportunity she's being offered. She could certainly tell them to go pound sand and walk out, but she doesn't. Even some of her dialog was charmingly cute and hesitant at that time.
Anyway, I look forward to reading it every month.
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Weird but to my taste.   
Rating: 10.0 / 10.0
by 0sirt
March 19th, 2010, 7:03am
One word to sum it up ... Weird.
BUT it's not unlikeable, in fact I even loved it (10/10) and I definately do not have any kind of drool related fetish.
The art is ... um ... good in it's own way I guess.
The male protagonist is your average boy while the girl is mysterious, weird and (in my opinion) likeable.
Even though I think of this manga as weird, it doesnt make you think too deeply about it, it even manages to stay lighthearted and refreshing which is what made me love this manga in all its weirdness (I think).
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Rating: 9.8 / 10.0
by monkeyvoodoo
March 11th, 2010, 12:44am
Took about 10 chapters before the very concept this whole story is based around stopped making me gag every time it came up. Ignoring that, there's a lot of unconventional, yet fanservice-y stuff that's likely the cause for this seties' high rating. I will say that the first volume or two felt really brilliant, as far as using unique ways to present the idea of romance and sexuality, but that was quickly lost due to repetetiveness, and a general lack of direction in the plot.

I still thoroughly enjoy reading every chapter of this, I just wish I felt like the story was going somewhere, and not simply being dragged out in order to sell books.
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Stays Just Fine   
Rating: N/A
by Hell_Clues
February 24th, 2010, 10:34pm
Sometimes it can be a really cute, and sedately funny series. Other times the side characters can be so annoying, pushy, and manipulative. That is the part I dislike, almost all the side characters are like this too, and it comes off very artificial and not funny. Some are fine like his sister and friend, and others don't have it as bad all the time.

There was a time when I thought the two's dynamic might had started getting repetitive but then the writing got interesting again. In fact, I'd say most of the arcs aren't all that good. They aren't at the heart of this series.

... Last updated on January 20th, 2013, 5:04pm
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Strange Romance Story   
Rating: N/A
by charsiewpau
October 17th, 2009, 8:52pm
Underneath it all, it's a romance story, but with a not so natural twist. Good as a relaxing read, but if you want something though provoking, this is NOT it.

... Last updated on October 17th, 2009, 8:53pm
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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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