Nazo no Kanojo X Wiki


The story of Mysterious Girlfriend X follows the romantic but unusually erotic relationship of Akira Tsubaki and Mikoto Urabe. Urabe is a mysterious female transfer student who recently came to Tsubaki's high school. After a series of strange events, Tsubaki finds himself addicted to a bizarre habit that Urabe has. She claims his attraction to be "love sickness", and their relationship slowly progresses, focusing on the odd friendship and behavior that comes out of their mysterious attachment to one another.

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Welcome to the Mysterious Girlfriend X Wiki, a wiki dedicated to everything about the anime/manga series, Nazo no Kanojo X or Mysterious Girlfriend X that any newcomer to anime or hardcore otaku fan will enjoy. Please help us by posting on the Message Wall or the Watercooler section any thoughts or comments regarding any of our articles! We currently have 4,110 edits to 134 articles and 311 images on this wiki, since May 4, 2012.

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Opening Animation and Song

Mysterious Girlfriend X Trailer

Otaku Anime and Manga Fans Comment About Nazo no Kanojo X
  • McWendys • 10 days ago


  • Stray Cat • 13 days ago

This is one hell of an anime. ! It's kinda weird and mysterious, but I had fun watching this. Some funny and ecchi moments, and a truly interesting story. Now, I'm scared that I will have a Drool Fetish.

  • Pennyroyal • 4 months ago

This anime is... WONDERFUL!!!!!!!!!!!!!! One of the best romance anime I've seen. Just watch it, don't even hesitate. Because when I first came upon it I was a bit skeptical so I skipped it, then after a while I came back and gave it a try.. now I'm so glad I gave it a watch !

  • Shuu Maiko • 8 months ago

After watching, I have so many emotions flowing in me right now. Happiness, Sadness, Loneliness and Emptiness... And I have only two expressions right now, I'm laughing and crying... ^_^ JUST ONE WORD FOR THIS ANIME!!! PERFECTION!!! <3 Aww! It's the best Romance I've ever seen so far!!! <3

  • Zegasi Rebel • 8 months ago

RECOMMEND IT, great show, you gonna find it weird in the first couple of episodes, but when you overcome the weirdness, is a really great romance, you will enjoy it, and I enjoyed it, I don't even normally watch romance.

  • Riyoto Mihama • 9 months ago

This is by far the best anime I have ever seen, yeah it was cringy as hell, but if you ignore your doubts, the weirdness makes this anime very good. There is not a single filler episode and they are all packed with story and character development. If you came here for romance your going to love this anime; but the end is so-so. Character development: 10/10 Animation:10/10 Romance:8/10 Story:9/10

  • Tom Read • 4 years ago

Can't believe this manga has ended, I really enjoyed it while it lasted......... will miss it !!!

Anime Critic's Review of Mysterious Girlfriend X

Mysterious Girlfriend X Anime Review-1

Mysterious Girlfriend X Wiki Official Anime Music Video

Mysterious Girlfriend X AMV - Flying High-1

Additional links to websites about Mysterious Girlfriend X

MGX websites:


The Music of Mysterious Girlfriend X


List of Cross-References

A list of the Cross-references from Ookumo Flashback to Mysterious Girlfriend X, two of Richii Ueshiba's premiere manga works, can be found here.


The Management Positions for Mysterious Girlfriend X / Nazo no Kanojo are all taken, and the editing manpower of this wikia is currently adequate. The vast majority of this Wiki is already done, with no more editing wanted or needed. However, if you still think that you must somehow supposedly edit on this Wiki, you MUST observe these Editing Guidelines


FOR A QUICK AND FUN REVIEW OF MYSTERIOUS GIRLFRIEND X, VISIT THE VIDEO SECTION TO WATCH MUSIC VIDEOS OF THE ANIME ! Also check out the anime review done by an experienced anime critic, to be found in the video section. The anime and manga stories, and this Wiki, are about the romantic and somewhat erotic nature of the relationship between teenagers; Urabe the girl, and Tsubaki the boy. That being the case, this entire Wiki is nothing more than PG-13, but may not be suitable for pre-teens or young children. READER DISCRETION IS STRONGLY ADVISED !!!

Mysterious Girlfriend X
Summary: The manga series by Riichi Ueshiba began serialisation in August 23, 2006 and finished on September 25, 2014. There were 93 chapters (including chapter 0) spread out over 12 volumes, along with a number of extra half-chapters that appear in the volumes which act as omake. The televised adaptation premiered April 7 and ran weekly until June 30, amassing 13 episodes. The OVA was a bonus 14th episode which crossed over with one of Riichi's earlier works.The anime's voice actors also released an audio drama CD where they reenacted the events of volume 8 of the manga.The series follows the relationship of Akira Tsubaki and Mikoto Urabe. Urabe is a transfer student who recently came to Tsubaki's school. After a series of strange events, Tsubaki finds himself addicted to Urabe's drool. Once she claims the addiction as love sickness, the relationship slowly progresses, focusing on the odd bond that comes out of the drool attachment.
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