In the Ero Ki series:

V.1 - Junai Ero Ki
What do animals do in the spring of their lives? They mate! Wildly!

Four mischievous friends have met their match: their own hearts! Now that they're older, the only troubles these country boys find make them moan and pant. Kou-chan wants to confess to Kishi, but he’s full of heart-pounding doubt over Kishi s response. Mitsuru, the serious boy pining for a lost love, is ambushed by Tarou, an obtuse, air-headed sadist, full of devotion for his darling. And who is this tall boy, beating everyone up yet shooting flowers out of the panels? Somebody needs to figure out his body language.

Psyche Delico comes out to play... all over the pages of PURE LOVE’S SEXY TIME!

V.2 - Souai Ero Ki

They may be in relationships and having sex, but boys at puberty have a lot of problems to solve!

The long-awaited sequel to the fan favorite series Pure Love’s Sexy Time is here! Kou gets frustrated with Kishi for being too gentle with him, Satoshi and Eishou have trouble finding a way to walk the same path to their futures and there isn’t enough verbal communication between Tarou and Mitsuru while they become more and more physically compatible… Where will these boys’ paths lead them?! The final conclusion to a Pure Love’s Sexy Time. (DMG)

A collection of 4 short and cute stories

1. Junai Clover
Mai is in love with her classmate Ikeda. She doesn't have too much self-confidence, so she turns him down, not believing she's a good match for him. But she cannot forget him. A year later they incidentally meet on the bus and.....

2. Sora o Miagete
"I'll make sure he always gets to see the stars, even on a cloudy day."

3. Junjou Shuushinki
"An innocent young boy's feelings have touched my heart."

4. Shuushin Ice Cube
Juu Mangetsu, the high school erotic novelist, is being sought after by the playboy, Shiizaki.

From Jigoku:

Tomo's eyes chases after fellow teammate Tanji. He knows he has fallen for Tanji already but what comes with first love, makes him both expectant and scared of getting hurt.

Chap 4: Motto Furimuke yo Baby prequel
Seo falls for Kazuki within minutes but Kazuki hardly sees Seo as the love of his life. When Kazuki is kidnapped however, Seo shows Kazuki exactly how far he will go to save him, revealing how deep his love really is.

Misaki is a 30-year-old virgin who has a bit of a crush on one of his co-workers, a pretty girl named Amano, but he has no experience and no clue what to do. Fortunately for him, he has an ecchi guardian angel…

From CoyoMoose:

Amushasu, of the Alaturca Alagun performing troupe, believes in magic created by talent and hard work to reach the hearts of his audience. He does not have any respect for the magic of genies, though he does happen to own a very dissatisfied one named Mayu. His faith in his ability to sway a crowd is threatened, however, when he comes across a beautiful young lady whose heart appears to be untouchable.

From MangaHelpers:
A collection of five spooky stories:
1) Tenchi Shinmei by HINACHI Nao & AMENO Hirume
Asuna Shio is a teenage girl with a very strong perception of the spirit world and has a shrineless god as a companion. One day, Shio's classmate is seen vanishing into a mirror. She reappears afterward, but seems changed for the worse in terms of personality. What has happened to her?

2) Gekkouchou ~Hyaku-nen no Koi~ by MOKOYAMA Jin
A two-tailed tiger-striped cat is taken in by a girl called Mitsu and given the name Torakichi. Torakichi is no ordinary cat, and the love and tragedy between them may be strong enough to transcend a simple lifetime.

3) Friend Doll by TACHIBANA Azusa
Mizuno Sachi spends almost all of her time studying, thanks to her demanding parents, and she doesn't really have friends. There's a boy she likes at school, but it seems impossible to get close to him. Suddenly, her stuffed bunny, Mimi, starts showing up in her dreams to advise her through her teenage life. But what is Mimi's motivation for all this help?

4) Tonari no Yomi-san by UMENO Hana
There's an urban legend about a girl who killed herself as a teenager, "Yomi-san," due to her insecurity over her appearance. Supposedly, her father stuffed her body, and, in her quest to become beautiful, the body seeks to take parts from pretty girls. At one school, several pretty girls have been mysteriously injured. Could the culprit be the dead girl, Yomi-san?

5) Oni no Sumu Shima by NANAMI Sora
Saki moves out to a rural area, where she has no friends. In her loneliness, she goes out to an uninhabited island, where she meets a new possible friend. He's a demon, but as Saki gets to know him, she finds him less and less frightening.

Hayate and Choko are twins who are as different as night and day. Choko acts like a shallow princess whose main concerns are her looks and cute things, while Hayate is the cool but overprotective brother with a penchant for sabotaging potential relationships for Choko. Naturally, Hayate plans to act accordingly when Chouko confesses to the school's prince, Tsukiyono (albeit, mainly for his looks).

After an argument over Choko's love life, Hayate and Choko end up tumbling down some stairs together, and bizarrely find they've switched bodies. Even worse, and much to Choko's horror, Tsukiyono starts to fall for Hayate who is now in Choko's body.

Because she killed herself, Sagiri became one who escorts souls of those who have died, instead of going to heaven. She met Hisagi while he was crossing the river of the world of the dead... They promised they would meet again and live happily in their next lives... Can their promise be fulfilled?

In this city, there is a legendary thief. An eccentric thief who lived down through the generations. A story that's told for generations. His name is Mugensai Ishikawa.

From Yen Press:

Kazuto Kirigaya (aka Kirito) has survived the death game of Aincrad masterminded by Akihiko Kayaba, programmer of Sword Art Online, and made it back to the real world. Unfortunately, the same cannot be said for Asuna Yuuki (aka Asuna the Flash), the girl Kirito fell in love with in the game world and who has yet to awaken from her seemingly endless slumber. As his sister, Suguha, sadly looks on, Kazuto continues to visit Asuna in the hospital in the hope of finding answers... But one day, the answers suddenly find him in the form of a man who claims to be Asuna's fiancé?! With him, the man brings an in-game screenshot of someone who looks a lot like Asuna being held captive! Now Kirito must dive into an all-new VRMMORPG, ALfheim Online, to bring Asuna home!!

From Fantasyshrine:

1) Boss' Favorite
Sakurai is a new hire who is having a secret relationship with his boss, Chief Akimoto. Even though the chief is gentle, suave, and unexpectedly, a pro when it comes to the H-department, he’s still an “old man” in Sakurai’s eyes! However, Akimoto sees right through the rather naive Sakurai and spoils him to the point that keeps him demanding for more… until they both come to regret it!

2) Secrets Under the Suit

3) Until There's Love

4) Cat Lover

5) Butterfly and Flower Lovers

6) Secretary's Choice

7) The Favorite Subordinate

From fictiondb:
It was cold in the tropics....

And it seemed to get colder every time Conrad DeVere looked Emma Belle's way. The feeling was mutual. Emma thought Conrad was the most unlikable man she'd ever met.
CARIBBEAN DESIRE

Conrad viewed Emma as a scheming gold digger--a woman who intended to use her position as researcher to Alistair Jackson to part the elderly millionaire from his money.

Emma was prepared to live with Conrad's freezing contempt--he must never know the real reason she'd come to Tobago. But she wasn't prepared for the rush of jealousy that struck her when she learned of Conrad's engagement!

1. Haikyo Shoujo (Ruin Girls)
Two years ago, Kazeko was trapped in a factory, where all she was able to remember was that a man kidnapped her. As for her friend Yuri, they seems to be more to her than meets the eye... As they both went back to the factory, Kazeko's memory resurfaces...

2. Ongaku ga Mieru Otoko (The Man Who Can See Music)
A music teacher can see music every time someone plays their instrument. It all started with a certain young man that gave him them hallucinations, however, that same young man may be a path to his salvation.

3. Tansu Shoujo (Chest of Drawers Girl)
A girl came to him, thinking he was her doctor. In order to investigate why his twin brother, the doctor died, he plays along with her. Entering her world blue sky world, he had opened his heart to her. But he isn't the one she loves...

4. Boushi no Ue no Oka (The Hill Above the Hat)
A renowned hatter makes hats for the rich for easy money. Getting a request to make a hat for the king, he sets of with his eccentric apprentice. On the way they crashed and entered the ruins for shelter. However, instead they can't get out of the ruins and in order to exit, he must make hats for the ghost. Can he makes hats that would satisfy the ghost?

God appears among us once every 90 days… And those who issued oracles from God, as the family of God, are taken away by Him. The people call the family of god “Sun” and send them forth with shouts of encouragement. “Suns” are truly human vessels envied by all for having received the greatest glory… However, There was never the slightest hint of joy in the expressions of those taken by God.

1-2) Closing Day
Two guys become fast friends due to their mutual love for gaming, until one of them begins to want something else entirely...

3) The Voices of Cicadas
Due to his deep-rooted fear of abandonment, Iwasaki has always preferred 'easy' relationships with married men looking for a quick lay, so as to ensure that the 'inevitable' breakup will be "fast, clean, and peaceful," since there's no chance that he'll come to expect genuine love from the other party. Needless to say, this seemingly foolproof plan has one major flaw...

4) Chocolate Soldier
Why do people try so hard to obtain things, when simply watching should be enough?

5) Laundream
Clumsy but hard-working, overworked Amamiya has been losing sleep for days, and finally manages to catch a nap while waiting at the laundromat.

6) To Hate Without Trying
Kubota, who's never been married, has an odd propensity for turning down prospective wives on the grounds that they love eating taiyaki, which he claims to hate. But what's the true story behind his strange aversion to such a popular and delicious food?

7) Spring Storm
Checking back in with the pair from Closing Day.

8) Together, Hand in Hand
Revisiting the boys from Chocolate Soldier, as high school graduation grows near.

Tateyama Sukai has just transferred into a high school filled with "princesses" from wealthy and influential families. In her search for club activites that appeal to her love of physical activity, she comes across a mountain climbing club, and finds herself drawn into the world steep ascents under the open sky.

Despite being in 3 clubs and 2 commitees, upperclassman Sasaki won't say, "No," no matter how often he's asked to help out. As popular and integrated as Sasaki is, antisocial Ikuzo is out on the fringes, never joining in, yet for some reason this odd loner follows Sasaki around like a lost duckling. So why is it when Ikuzo pushes closer to an uncomfortable Sasaki, Sasaki just can't seem to leave him alone?

"30,000 residents of the Northern Kelko plains were vaporized by the Kiyania bioweapon sprayed by the terrorist group Echiboza. 30,000 cats remained in their place. However, one person escaped this fate; a girl saved by a stranger with a gas mask.

Her name: Kaka Hollen."

In this strange new world, terrorism, crime, and corruption have found a new target in the feline kind. Enter counter-terrorism squad 'Green' and their all-purpose humanoid weapons, the 'OB's! But what role will Kaka play in midst of all this?

From Antisense Scanslations:
This sensuous take on Red Riding Hood sees girl and wolf switch roles. Marie has a "cute face," but comes from a family of wanted criminals, and isn't afraid to shoot to kill. But when a good-natured wolf with unusual powers shows up...

MAL:
Naohira wants a cat of his own...