Mysterious Girlfriend X
謎の彼女X
We checked 8 streaming services in India on 03 Jun 2026 at 21:49 IST
About
Akira is a normal high school boy, but he nevertheless impulsively licks some drool left by the mysterious transfer student Mikoto. The next day he falls asleep with an inexplicable fever. After five days Mikoto suddenly comes to visit, and makes him consume her drool. The fever instantly vanishes, and Mikoto explains that he's suffering from "love sickness." She can transmit emotions through her drool, and the two of them are now bound together.
Cast
Seasons
Episodes
Season 1
Mysterious Girlfriend
The new transfer student, Urabe Mikoto is strange, quiet, and unapproachable. But after Tsubaki Akira gets a taste of her, he can’t stop dreaming of her.
A Mysterious Bond
Tsubaki and Mikoto have been “going out” for a month. Tsubaki is confused about his role of boyfriend and looks to his friends for help. Can their relationship continue beyond drool?
The Mysterious Test Tube
Ueno and Oka were caught kissing by Tsubaki, Ueno begs to him to keep quiet. Now all of Tsubaki’s thoughts are about kissing Urabe. Can he get that out his system, before he loses her to Ogata, who just asked her out?
Mysterious Girl Meets Girl
Out of the blue, Oka has taken an interest in Urabe. When she asks Urabe to be her friend, Urabe tells her she doesn’t need friends. But that feeling might change once the two girls share a drink.
A Mysterious First Date
Tsuabki has finally worked up the courage to ask Urabe out on a date. But when he tries to bring it up, she speeds off. Will his dream of seeing her in a bikini come true or will it just stay a dream.
Mysterious Step Up
After having a conversation with Oka about first names, Tsubaki wants to call Urabe by hers. While waiting for Urabe, the girl from the picture he once carried in his wallet stops him to talk, and surprises him with a question.
Mysterious Flu
After showing impressive display on the track, Mikoto is asked to participate in a relay race for the sports festival, although she rejects the idea of joining the track team as it means she wouldn't be able to walk home with Akira. As the students switch to their winter uniforms, Akira comes down with a cold. Having heard from Ayuko about how she dressed up in a bikini to help Kouhei get over a cold, Mikoto wears a bikini under her coat and gives Akira some of her drool, which helps him recover. On the day of the sports festival, Mikoto manages to help bring her team to victory in the relay race. Akira suggests to Mikoto that she should join the track team, but Mikoto once again rejects, as she much prefers spending time with Akira.
Mysterious Sensation
Akira has a dream where he got to squeeze Mikoto's breast and can't get the sensation out of his head. Taking a stroll, he decides to go in the direction Mikoto usually takes after school and comes up to an apartment block, which turns out to be where Mikoto lives. Mikoto invites Akira into her apartment for tea, where his imagination starts to get the better of him. After catching Mikoto as she trips after being spooked by some lightning, Akira almost reaches for her breast but Mikoto stops him. After getting Akira to tell her about his dream, she feeds him some drool whilst grabbing her own breast, giving him a stronger sense of the feeling. She then allows Akira the opportunity to touch them for himself, which causes Akira to become more aggressive and tease her ears until she notices Mikoto is crying and runs off. The next day, after Mikoto gets some advice from Ayuko about the new experiences she is feeling, Akira asks Mikoto to slap him as a way of apology. Afterwards, Mikoto explains the feeling she gets when her ear is touched before taking on Akira's bruise herself.
Where does Mysterious Girlfriend X rank today?
Mysterious Girlfriend X is #1792 on the CineFlixo Daily Streaming Charts today.
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Watch Mysterious Girlfriend X Online Free — All Episodes in HD
If you've been searching for Mysterious Girlfriend X all episodes in HD, CineFlixo has you covered. This popular Japonés animation, drama, comedy, and sci-fi & fantasy title from 2012 is available to stream instantly — no ads to fight through, no paid subscriptions, no annoying redirects.
About Mysterious Girlfriend X
Akira is a normal high school boy, but he nevertheless impulsively licks some drool left by the mysterious transfer student Mikoto. The next day he falls asleep with an inexplicable fever. After five days Mikoto suddenly comes to visit, and makes him consume her drool. The fever instantly vanishes, and Mikoto explains that he's suffering from "love sickness." She can transmit emotions through her drool, and the two of them are now bound together. Across 1 season and 13 episodes, originally airing on Tokyo MX.
Mysterious Girlfriend X Cast and Characters
The cast features Miyu Irino (as Tsubaki Akira), Yuki Kaji (as Ueno Kouhei), Ayako Yoshitani (as Urabe Mikoto), Yu Shimamura (as Hayakawa Aika), and Ryo Hirohashi (as Oka Ayuko). Their performances are a major reason Mysterious Girlfriend X has built such a passionate audience.
Where to Watch Mysterious Girlfriend X Online
Want to watch Mysterious Girlfriend X online without paying? CineFlixo is the easiest way. Click play and the series starts in seconds. No popups, no "5 day trial that auto-charges" — just the show.
▶ Watch Mysterious Girlfriend X NowWhy People Are Watching Mysterious Girlfriend X
Mysterious Girlfriend X flies under the radar but it deserves your attention. What makes it work is emotional weight that hits where it counts, sharp comedic timing that lands consistently, and world-building that respects the audience's intelligence. If you enjoy Japonés storytelling that doesn't follow the same tired beats, this is the kind of show you'll end up recommending to friends.
Frequently Asked Questions about Mysterious Girlfriend X
Where can I watch Mysterious Girlfriend X online for free?
You can watch Mysterious Girlfriend X online free on CineFlixo. Just open the page and hit play — no signup, no subscription, full HD streaming on phone, tablet, or desktop.
How many episodes does Mysterious Girlfriend X have?
Mysterious Girlfriend X has 13 episodes across 1 season. All episodes are available to stream right here on CineFlixo.
Is Mysterious Girlfriend X good? What's the rating?
Mysterious Girlfriend X holds a 6.6/10 rating based on 93 reviews — a solid pick if the genre interests you.
Who is in the cast of Mysterious Girlfriend X?
The main cast includes Miyu Irino, Yuki Kaji, Ayako Yoshitani, and Yu Shimamura, plus a strong supporting ensemble.
Is Mysterious Girlfriend X available in Japonés?
Yes — Mysterious Girlfriend X was originally produced in Japonés and that's the version you'll stream here on CineFlixo. English subtitles are provided when available.
When was Mysterious Girlfriend X released?
Mysterious Girlfriend X first aired in 2012.
Do I need an account to watch Mysterious Girlfriend X on CineFlixo?
No. CineFlixo is free and you can watch Mysterious Girlfriend X without creating an account. Sign-up is optional — only useful if you want a personal Watchlist or to comment on episodes.
Similar Series You Might Like
If you enjoyed Mysterious Girlfriend X, check out My National Husband, Boss and the Bird, Bewitched, Lois & Clark: The New Adventures of Superman, and Show by Rock!! Short!!.
Frequently Asked Questions
Where can I watch Mysterious Girlfriend X for free?
You can watch Mysterious Girlfriend X online for free on CineFlixo. All 13 episodes across 1 season are available to stream in HD without a subscription, signup, or paywall. Just open the show page and press play.
How many seasons and episodes does Mysterious Girlfriend X have?
Mysterious Girlfriend X currently has 1 season and a total of 13 episodes. The series status is "Ended", so the episode count may grow as new seasons are released. You can browse the full episode list on CineFlixo and continue watching from where you left off.
What is Mysterious Girlfriend X about?
Akira is a normal high school boy, but he nevertheless impulsively licks some drool left by the mysterious transfer student Mikoto. The next day he falls asleep with an inexplicable fever. After five days Mikoto suddenly comes to visit, and makes him consume her drool. The fever instantly vanishes, and Mikoto explai… It belongs to the Animation, Drama, Comedy, Sci-Fi & Fantasy genres.
In which language is Mysterious Girlfriend X originally available?
Mysterious Girlfriend X was originally produced in JA. On CineFlixo the show is available in its original JA audio. Check the player options on the watch page for available subtitle tracks.
When was Mysterious Girlfriend X first released?
Mysterious Girlfriend X first premiered on April 8, 2012 (2012). The series has since concluded its run.
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