From The Zero Alliance:
Every ten years, a young woman is offered as a sacrifice to the mountain god.
When the tengu goes to see the sacrifice, he finds out that the sacrifice actually volunteered for the role.
And the sacrifice turns out to be a young boy.

1) Teach Me More by SHINJO Mayu On her way home from school, Hina is attacked by a pervert on the train! She's too embarrassed to raise her voice, but - she's saved by Kyousuke!? Kyousuke is the hottest guy around, and there's not a single girl who doesn't want him. He pulls Hina off the train, and then... he does more things to Hina than the pervert on the train would have! (Also included in Motto Oshiete) 2-4) Chase 4Me by IBUKI Kaede Hana's mother and father died when she was five, and ten years later it's her four incredibly over-protective and super-possessive brothers who take care of her. Today, she's beginning her first day of high school at an all girls school... but when she accidentally walks into the all boys school next door, she's assaulted by males! Then Hana falls in love at first sight with the boy who saves her - Ren - and begs him to take her on a date. Ren can can rescue Hana from the boys in his school... but is he any match for Hana's brothers? 5) The Frontline of Summer! A First Date Victory-or-Defeat Charge by FUJIWARA Natsu Megumi is 16 years old. Today is her first date with her crush, Satou-kun, and... the extra-long title says it all about this extra-short story! 6) Radical Love Revolution by SARA Mahiro Riko and Kippei have been friends since they were kids. They're so close that they beat up bullies together, and now they've handcuffed themselves to each other! They've always looked for excuses to fight... but now Riko is looking for an excuse to love. So the question becomes: can Kippei survive the romantic advances of a girl who expresses herself through violence? 7) The Desires of My Right Hand, the Beating of My Heart by AYUKAWA Mio Touko is a mild-mannered high school girl with an unspoken crush on Kuga-kun... until her friend hypnotizes her, and Touko's right hand takes on a perverted mind of its own! It gropes Kuga-kun, and Touko no longer has any control over it...!? 8) Sepia-colored Secret Room by HARUSHIRO Amami Third grader Chiko's friends were constantly being bullied by Rei-kun, a boy who glared at them with beautiful sepia-colored eyes, because he didn't want anyone hanging around Chiko but him. They took revenge on him by locking him in a haunted house, and Chiko never saw him again... Seven years later, the new transfer student from America is... Rei!? He's become rich and is twice as sadistic as before, and he's got a score to settle with Chiko's friends - and Chiko herself.

When a Man Loves a Man series:

1) When a Man Loves a Man (1 Volume)
Story of several guys working in host clubs.
Professional rivalry, mistaken identities, unrequited love, and jealousy test Shinkawa's and Takaaki's friendship on a semi-regular basis. But when Iwaki Kyousuke, Takaaki's old flame and mentor, returns to seduce Shinkawa away to a new host club, will Takaaki be able to persuade Shinkawa to stay, or will his devotion to Iwaki cause him to lose Shinkawa's partnership?

2) Last Waltz (2 Volumes)
At the end of When a Man Loves a Man, Shinkawa had rejected Iwaki's invitation to become the number one host at his new club. But now the rivalry between Schnapps and the Rusty Nail is heating up.
Schnapps has hired a new host, Ishii, who is stealing all the other hosts' clients away. What could his motive be? Is Shinkawa right in suspecting that Ishii is somehow working for Iwaki? But when Shinkawa shares his suspicions with Takaaki, why is he so quick to defend Iwaki? How could he still love the guy that abandoned him to start his own club? How can Shinkawa make Takaaki look at him the way he looks at Iwaki?

3) Nightcap (1 Volume)
Flashback showing how Takaaki and Iwaki met and then why the cruel Iwaki abandoned the kid after let him become bisex.
Iwaki has been a gigolo for 8 years. When he meets Kato, a homeless kid sleeping against his car on the streets, his fancy is struck. When he finds that Kato is looking to become a gigolo, he gives him money to help him clean up to get the job, just because he's interested. Will he lose his love for women in exchange for his love for Kato?

4) Irokoi (3 Volumes)
Follows the star-crossed love relationships of four hosts, Takaaki, Iwaki, Shinkawa and Kenzaki. Interesting story and well-developed characters, but you should probably read the preceeding three When a Man Loves a Man series to understand the backstory.

5) U:V (2 Volumes)
The final arc of the series on the four hosts and their relationship. Iwaki introduced his nephew, Ozaki Kazuomi, to both Takaaki and Shinkawa; Takaaki is to train Kazuomi before being passed over to Shinkawa. However, Shinkawa still has doubts about Takaaki's feelings for Iwaki; has Takaaki really put his feelings for Iwaki behind him? What about Kenzaki, who has such love and passion for Shinkawa that he's willing to do anything for him?

From KuroUsagi Translations: "The top of her grade year round and all too perfect student council president who repels everyone, Watanuki Leila, has a secret. Her family's home is a love hotel!? While desperately trying to hide that fact, Sangatsu Owaru the new treasurer has accidently leaked it?'

From Evil Flowers:

Fukka, the daughter of the Inuiyama's lord, is determinate to do everything to help her father win the war and get him home safely. Because she's a girl she's not allowed to go to the battle field with him, but she hears that a certain "war ghost" called Byakkimaru has been seen near her town. The legend says that if you get Byakkimaru to join your side you will win the war. The little princess starts a trip in search of this ghost determined to save her clan.

After the death of a close friend, Tomoe, a former roller skater, joins a famous stunt men troupe, the Green Ship. The head of this troupe, Kazusa, becomes her lover, but Tomoe soon discovers that the Green Ship is a sinister crime organisation and that her dear Kazusa is a cold-hearted killer. A difficult struggle begins for Tomoe, not only against the organisation but to get away from Kazusa, who wants his lover back, dead or alive!

Akari is an unfashionable first-year high school student who just moved from the countryside to the big city. While taking pictures of "Nana-chan," a huge mannequin at the mall, Akari accidentally bumps into a handsome boy who compliments her on her eyes. Little does she know that the boy who has taken a fascination with her is actually Kanda, an extremely fashionable model and the heartthrob at her new school! What happens when he decides to make Akari stylish enough to land on the front cover of a magazine?

"What is the boundary between game and reality?"

The world is in danger. Strange juggernauts called "Angels" have started to appear all around the planet, presenting riddles called "Paradoxes" to whoever happens to be in the near vicinity. Answer right and your land will receive God's blessing. However, if you fail to solve the paradox be prepared to receive divine punishment...

Angelica North has lost her parents in a fire accident. She blames herself for their deaths, and this has driven her to darkness. Sylph Rave is an 'occult writer' who is rumored to see ghosts. These two strange, rumored characters are driven by fate to meet. How will Sylph help Angelica? What other mysterious things will haunt our troubled heroine?

From Aerandria Scans:

It’s the middle of the Meiji Era and our heroine, little Suzu, is sold to the red lights district. However, the rich heir of a dry goods store, Tsugaru, buys her freedom for no apparent reason. She is deeply grateful for being saved, but she doesn’t understand why he paid so much money for her and the only explanation he offers is “we have a bond.”

She tries to unravel the mystery of his feelings and gradually grows from a little girl to a young woman, always by his side. A gentle and slow-paced love story set in the Meiji Era.

Collection of oneshots:

1) Midnight Untouchables
New hire Mitsuha has an email friend “Chief” whom he met through a gay dating website. Suddenly, he has this funny feeling that his on-line buddy is none other than his boss in real life, the serious, strict, four-eyed Chief Azuchi. Thus starts a rather complicated “Love Untouchable*” (*”Untouchable” is a popular Japanese comedy)!

2) Duet (Sing for Me)
Nakamura Tsuyoshi, afraid his tone-deafness is ruining his chances to pick-up girls, decides to work with the substitute music teacher on a cure. Shockingly, Sensei’s lessons don’t include any actual music.

3) Shall We Love?

4) Please Don't Let Go of That Hand

5) Ghost?Sweet?

6) No Sweet Life

7) Under The Glasses

8) Ring, Ring Christmas
A handsome Santa wants to exchange some odd presents with his cute, but short-sighted, young reindeer.

9) Surprise Christmas
When Takahiro was 5, he got the best Christmas present ever: his Onii-chan! Thirteen years later, Takahiro wants to be his Onii-chan’s best present ever. Can he?

Another installment featuring Kawai-san and Ichibashi-san

A story about Kawai-san taking music classes to be together with the senpai she loves. The problem is that her life is made unbearable by the sullen and strict drummer Ichibashi-san.

From Tasty Kiwi Scans:

Komugi, a wealthy young woman, who loves delicious food, decided to become a chef at the Italian restaurant L'aurora. She was hired on the condition that she would live by supporting herself and on a low pay. But what will become of her, when every single day she's being tormented by the skilled, but sharp-tongued top chef Tetsuri, poverty, and, more than anything, hunger...!?

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From MangaHelpers:

Yonekura Komugi is a young woman from a rich family, who thinks one of the happiest moments of life is when you eat something truly delicious. She dreams of being a chef at the Italian restaurant L'aurora, a place that held special significance for her grandmother. Unfortunately, she sabotages herself by making a terrible first impression on the prickly L'aurora top chef, Tetsuri. Join Komugi as joins the staff at L'aurora and works her way to becoming a chef that can share the joy of delicious food with others! [tethysdust]

Mr. Sakaki and Ms. Ousaka investigate the case of the serial scribbler!

From ShoujoMagic:

High school senior Aihara Kotoko has had a crush on Irie Naoki since freshman year. But she's been discouraged from confessing to him by a few things: he's a member of "Class A," the top ranking class in school, whereas she's in "Class F"; he gets the top score on every exam; and he's so smart, popular, and handsome that he's been class president every year. When Kotoki finally musters up the courage to present him with a love letter, though, Naoki outright refuses it, telling her point blank--with a look of disgust and boredom--that he doesn't like "stupid girls." Poor Kotoko's worst nightmare! Her heart is broken, but then a change in circumstance forces Naoki and Kotoko to be together every day...!?

Itazura na Kiss is a gem to the shoujo demographic, as it is the mother of a lot of cliches found in today's shoujo series. Despite the fact that it is 2 decades old, it still stands out as unique for it has the series follow the main characters well into their life, over a span of 10 years. It was so popular it inspired popular series like Marmalade Boy and Fruits Basket.

However, the author had an accident while she was moving homes with her son and husband, and passed away a few months later, leaving her popular manga forever uncompleted. It was adapted into a popular Taiwanese drama under the title "It Started With a Kiss", and it even earned sequel. It was also adapted as a short Japanese drama in 1996, and an anime series in 2008, with the anime portraying the author's planned ending.

Only the fearless survive in the white-hot world of street racing, as teams take on dangerous roads in the shadow of Mt. Akina. Behind the wheel of the mysterious "Ghost of Akina" is Takumi, on his way to becoming the greatest racer ever.

A oneshot by NisiOisin and Miyokawa Masaru:

Sunaki is a back-up player on the baseball team. One day, he finally gets the courage to put a love letter into the school idol's shoe locker, but where will his actions take him?

(The title is a play on words: 変身願望! (Henshin Ganbou!), or Desire for Change!, vs 返信願望! (Henshin Ganbou!), or Desire for a Reply!)

Hassaku’s grandfather loved and collected beautiful things. After his grandfather passed away, wandering painter Hassaku inherited his grandfather’s house. The house is supposed to be empty, but instead it is inhabited by two beautiful siblings, Soyogo, an erotic novelist, and his younger sister, who is his model. Until his grandfather's funeral service is over, Hassaku will have to live with the eccentric pair...

Note: The main story has been completely scanlated, but the last 2 chapters - unrelated oneshots - have not.