Romance (1792)

Life in the year 2020 in Tokyo is tough, as crime rates are high, and crimes against women rank second only to murders. To prevent their daughter from being exposed to these crimes, Tsukasa's parents raised her to be a male. Tsukasa aspires to be a policeman fighting against the yakuza, just like her parents. However, her parents died in the line of work, leaving behind Tsukasa and her 3 brothers to fend for themselves. Tsukasa must thus work as a bodyguard for her classmate, Ryuji, who happens to be the leader of the most powerful yakuza group in Tokyo, to pay off the family's debts.

(Source: ANN, edited)

Saiki Takaya, a guy who is easily misunderstood, one day finds a flask containing the succubus Lilim. She is very attractive but, she also has the tendency to drain the life force out of people. She surprises the life out of him (literally) when she kisses him unconscious. The girl, Lilim, turns out to be a succubus who gains energy by kissing guys. Lilim then flies off for more "food," but returns later, saying that Takaya's life-energy was the "tastiest." From then, Lilim is accepted by Takaya's parents as a live-in girlfriend of sorts, and Takaya's heart seems to start wavering towards this voluptuous devil.

(Source: MU)

Junjou Romantica weaves together the stories of three couples who are about to experience their own "pure-hearted" romance.
Junjou Romantica
Misaki Takahashi, a young man preparing for his university exams, and his tutor, Akihiko Usami—a highly acclaimed novelist—do not get along. If it was not for Takahiro, Misaki's beloved older brother and Usami's best friend, the two would never have crossed paths at all. But when Misaki discovers a sexually explicit boys-love novel featuring characters eerily similar to Usami and Takahiro—definitely penned by Usami himself—his suspicions about the man's ulterior motives toward his brother are confirmed. After a heated confrontation, Misaki and Usami decide to call a truce. That is, until Takahiro visits them with his new fiancée! Misaki should be elated, but as Usami simply accepts the news with congratulations, why does he feel this unfamiliar anger toward his brother?
Junjou Egoist
Hungover and suffering from an unrequited love, Hiroki Kamijou is crying on a park bench when he almost gets hit by a small rocket. Upon seeing his tears, the owner of the rocket, Nowaki Kusama, cannot seem to leave him alone, even convincing Kamijou to tutor him for his upcoming high school proficiency exam. But when the subject of his tutor's unrequited love appears at his doorstep, Nowaki claims Kamijou all to himself and declares his feelings for him. How will the prideful Kamijou deal with this "storm" that threatens to drown him and his heart with love?
Junjou Terrorist
Shinobu Takatsuki believes that it was destiny that led him to meet You Miyagi, who had saved him from being extorted for money three years ago. Things got complicated, however, when they became in-laws, with Miyagi having married Shinobu's older sister—and so, the news of the couple's recent divorce presents the perfect opportunity for Shinobu and his hero to finally be together. Miyagi, however, does not appreciate the advances of this much-too-young "terrorist" who thinks nothing of their age gap and complicated relations. He tries to scare him off, but Miyagi underestimates just how serious Shinobu is and that he is willing to break through any obstacle, all for their "fated love."

[Written by Animeranku Rewrite]

High school is hard for Kayano. When she tries to confess her love to the kind but distant Yuichi, the school bully Takeru makes her life hell. But things get worse when Kayano's mother gets engaged to Takeru's father, the school principal!

Soon enough, instead of be in love with Yuichi, she falls in her love with her future brother, Takeru.

What will she do about this forbidden love?
Included one-shot:
Volume 11: Flying Rabbit

The curse of the magical crimson sword has turned Prince Vald into a monster... To break the spell, he sets out on a journey with the sexy and gorgeous magician, Havi. Vald has no idea that when he turns into a beast at night, Havi uses his unique talents to pacify his beastly appetite... The luscious journey of Vald and Havi begins.

Shuji and Chise are two Hokkaido high school students barely starting a relationship with each other. Then, with no warning, a squadron of bombers from an unknown country destroy the city of Sapporo. All hope is lost when suddenly, the bombers are destroyed by a small red light floating across the sky. At this point, Shuji finds out that the one responsible for eliminating the enemy forces is Chise, who reveals herself as a cyborg engineered for mass-destruction.
(Source: ANN)

Iwaki Kyousuke and Katou Yoji are two hugely popular adult film stars looking for a way out of the industry. Their chance arrives when they're both invited to audition for a new erotic film. Imagine their surprise when the director decides the only way for him to choose who will get the coveted lead role is for them to perform one of the film's love scenes on the spot—with each other! Things get even crazier when Katou decides to take drastic measures to ensure he can continue seeing Iwaki after film production wraps. How will Iwaki respond to Katou's impulsive act?

(Source: SuBLime)
Included one-shot:
Volume 5: Fuyu no Semi (Winter Cicada, 3 parts)

Black Knight, the highest honor that can be bestowed upon a knight in the kingdom of Aran. Sieg O'Brian may have his eyes on the title of Black Knight but he's also after another prize, the young prince, Chris. Black Knight is a sweeping romantic fantasy epic about the relationship between the prince of a medieval kingdom and his loyal guardsman. Our story begins when Chris and Sieg meet in military school and embark on a life-long relationship fraught with danger, treachery, and above all, love.

(Source: BLU Manga)

The only Angel Princess of Heaven is betrothed to the Emperor of the Underworld. Unable to accept her future with the Demon King, she realizes that her only choice is to run away. Her plan is to join the human world disguised as a schoolboy! Now all of the Gods from Heaven and Hell are searching high and low on the earth trying to make sure that a wedding happens.

(Source: MU)

Following an afternoon of alien encounters, death, and resurrection, Hazumu Osaragi wakes up to find that he is now a girl. While this is shocking to Hazumu, her friends couldn't be happier! This is especially true for Yasuna Kamiizumi, who has a chronic condition that causes all males to blend together in her eyes. Hazumu has always been the one exception to this condition, to Yasuna's confusion, so she is elated at Hazumu's transformation. However, Hazumu's childhood friend Tomari Kurusu still harbors the romantic feelings she had for Hazumu ever since they were younger. Hazumu now has to choose between two girls competing over her. She feels flattered, but she'd rather just choose them both!

[Written by Animeranku Rewrite]

A TYPE-MOON's staff member artist Takenashi Eri has created many side stories published in official anthology comics for the most of the group's projects: Shingetsutan Tsukihime, Kagetsu Tooya, Melty Blood, and Fate/stay night—you'll find your favorite characters in various hilarious situations that weren't covered by any of the original products.

(Source: MU)

A story focused on Saya and Hagi's past in Russia in the first years of the 20th century (1910's).

(Source: MU)

Yuji Sakai, a high school student, is told by strange girl that he died some time ago, and that he is a "Torch", a temporary replacement for erased humans. Torches take on the forms of those erased persons, but after a period of time, they will vanish from existence and the memories of the living. Unfazed by his apparent death, Yuji befriends this girl and names her "Shana" after her sword. Shana resolves to protect Yuji from the Denizens, who would use his special replenishing Torch to disrupt the balance of the world, and Yuji decides to join Shana in her fight.

(Source: ANN)

Elle Nagahara is a first year in high school. Her grandfather and his rival, later friend made a promise, that their kids would get married. But they both had sons, so now the promise falls for the grandkids, Elle and Ruo. Ruo wants to marry Elle, but Elle want's a normal life. Everytime she falls for a guy, her grandfather sends few students from his gym to scare the guy off. It worked on every guy, untill Kazuki Shindo.

(Source: ANN)
Included one-shots: Nandemo Ari sa (Anything Goes), Hibari Telepathy

A sergeant by the name of Sousuke Sagara is assigned an important task. That of guarding high school girl Chidori Kaname. Sousuke is a military genius, gaining high rank at an early age, but because of his strange upbringing, he lacks social skill. Now, he finds himself as a fish out of water as he attempts to protect a girl from an evil organization and turn in his school work on time.

(Source: ANN)

Kimi ga Koi ni Ochiru (You Fall in Love) by Takanaga Hinako starts when Mochizuki Haru has subbed in to teach and is made student advisor of the Archery club and is forced to deal with painful memories involving one of the students (Tsukasa) and the student's brother (Reiichirou).

(Source: Hochuuami)

Fuguno Masuo is a hapless 24 year-old businessman who is unlucky in love, he's never even had a girlfriend! After consulting a fortune teller, Masuo believes he'll never have a chance at love. All that changes when he meets the beautiful Nagisa Shiozaki at a marriage interview pub, who herself has had the same poor luck with guys. Now he'll do anything to woo the girl, but he'll have to fend off other suitors and the affections of a co-worker, while keeping himself out of awkward situations that always end badly for Masuo.

from Baka-Updates Manga

In today's world of computers and cell phones, few people have time for superstition and ghost stories—but that doesn't mean that they aren't real! Amane Kamori is a powerful medium from a remote village in rural Japan. Her guardian is Hyoue Inugami, a demon dog whose powers are literally fueled by her kiss! Together they protect humans from vengeful spirits and bring peace to the dead.

But when Amane's family moves to the big city of Tokyo, all the magical power in the world can't help her survive high school! Her chilly demeanor and lack of social graces make her a campus misfit. Popularity comes much easier to Hyoue, whose sexy good looks (in his human form) bring him lots of female fans. But Hyoue's lapdog loyalty to Amane only leads to more woe, as jealous classmates can't understand what he sees in her. If only they knew...

(Source: Go! Comi)

Chiaki Sakaguchi appears to be a sociable, popular high school senior, but he carries a dark secret with him that he can tell no one about – not even his closest friends. When Chiaki meets fellow student Eiji Yukimura – an under-achieving social misfit – for the first time, he believes he’s found someone who can understand his inner pain. As the two become closer, Chiaki learns that Eiji has a secret also – a secret so dark, it threatens to overshadow his own. United by common dysfunction and angst, Chiaki and Eiji begin to search for pleasure together beyond their pain. Will the pair’s growing bond enable them to break free of their troubled pasts and create a brighter future? Or is the damage that’s been done to both of them beyond any healing that love can provide?

(Source: Juné Manga)

Ichitaka Seto is a 16-year-old high school student who is hopelessly in love. He is smitten with Iori Yoshizuki, a classmate who recently became famous after featuring in a magazine. However, Ichitaka has been unable to convey his affection, hung-up on a brutal rejection in the past. As luck would have it, Ichitaka finds himself paired up with Iori in the Freshman Welcoming Ceremony.

Despite some mishaps, things go well between the two. But when Ichitaka's childhood friend, Itsuki Akiba, comes crashing into his place, things take a drastic turn, and the three individuals' relationship gets off to a complicated start.

[Written by Animeranku Rewrite]

In the play of life, all Hikaru Takabayashi wanted was to be part of the scenery. Tormented by jealous schoolmates ever since she appeared in a famous commercial in grade-school, Hikaru transfers to a prestigious all-girls' academy where she hopes to settle down to a quiet life of anonymity. But when her new roommate turns out to be the super-popular TV idol Izumi Kido, Hikaru finds herself thrown smack in the spotlight's glare once more!

And as if living with a celebrity wasn't bad enough, Hikaru discovers that there's more to Izumi than her "good girl" image—she's a he! And this is only the first of Izumi's many dangerous secrets! Now Hikaru's the unwilling star player in a madcap tale of deception, abduction, humiliation and blackmail... you know—the usual romantic stuff.

(Source: Go! Comi)

Konoe, a high school student, is confused about his sexuality. He meets Hikaru in the sleazy gay district, and sleeps with him. They begin to play at being lovers, but Konoe's heart belongs to Atori, his friend and classmate. Can Konoe come to terms with his sexuality and reveal his feelings to Atori, and where do Hikaru's true feelings lie? (Source: BibloEros)
** For the Rules Series Timeline, see the More Info tab above.

Karate girl Seri tries to kick away her past in order to catch a new guy at a singles party, but Tamaki, a childhood flame from her old karate dojo, shows up to show off and makes her heart pound. Their reintroduction leads to a karate challenge, and if Seri loses, she must become Tamaki's "toy"...!? It's a game of love with more rivals and obstacles (and sex!—LOTS of SEX!) than either Seri or Tamaki could have foreseen!

(Source: Shoujomagic)
Included one-shots:
Volume 1: Shinju no Kusari Bangai-hen
Volume 2: Virgin Beast
Volume 3: Kakuran Innocence (Scarred Innocence)
Volume 5: Dakkai Letter Sakusou Love (Rescued Letter, Complicated Love)
Volume 7: Ribbon

"Forgive me. I can't become a servant of the Lord yet," Maria says as she runs from her vows ceremony at the convent where she was orphaned 16 years ago. She has received another letter from the mysterious "G," her faceless benefactor. She is not as alone in the world as she thinks; "G" writes that she has a relative at Hakuhou Academy who is in need of her guidance, but he cannot tell her this relative's name. Trying to enroll and search the school presents Maria with a number of problems, however -- the foremost of which is: Hakuhou is an all boys school! (Source: ShoujoMagic)