From Divine Sanctuary:
Yuzuki has a crush for her super kind and cool brother, but she has her heart broken when he brings his girlfriend home one day. The next day, by chance, she bumps into a guy who looks exactly like her brother! What is this feeling that she has for him? Is it just because he looks like her brother, or is it...?

Volume 1: Rio was living a perfectly normal high school life, when transfer student, Tomo-chan, entered his school. Rio watches as Tomo easily grabs the attention of the female student body. It's not until Tomo picks up Rio's dropped planner with a picture of his beloved idol, a male teacher, that they interact. Suspecting that Rio is gay, and after stating that he's going to "cure it" Tomo enlists in a "Homo Fixing Training Regimen". But does Tomo really want to cure Rio of his homosexuality, or simply get his undivided attention for himself?

Volume 2: Rio was filled with happiness when the cool transfer student Tomo-chan confessed to him saying, “I’ve always loved you” However, for some reason Tomo-chan has had a cold attitude lately. Since he had never been clearly told, “Go out with me,” Rio has become unsure about their relationship. Moreover, there’s a rumor that Tomo-chan is going to study abroad… When even Rio’s first love, big brother Haruka, shows up; will the two of them grow even further apart…!?

Volume 3: Will Haruka, Rio's first love, find adult love in this side story spinoff of the much loved Darling series?

Volume 4: coming soon

From Attractive Fascinante:

Kusaka is an owner of a used-book store and is oblivious to the people around him. Iijima, on the other hand, is a hotheaded sales person. They were classmates during college and had some argument before, yet they became lovers now. When two total opposites personalities clash, the spark of love starts to disperse too…

Note: Chapters 7-9 were NOT included in the licensed volume.

1) Hoshi sae mo Nemuru Yoru by Miyuki Kitagawa
(The Banquet of Stars) Kana goes along with her friends on a trip for Golden Week, and they happen to visit an island that she had once seen a picture of the stars from.

2) No Panties Musume by Ako Shimaki
Roux comes from another country and lives with Ichiko, a smart player who fools around with all the girls. She doesn't wear panties because it's not a part of her culture...? And kissing is a casual greeting!?
(Also included in Boku ni Natta Watashi vol 2)

3) Tomodachi Shikkaku by Akane Kasuga
Riku, a cute girl, steals the attention of all the girls from a jealous guy. He doesn't see her as a real girl, but she still likes him.

4) Koi no Neiro by Shin Yumachi
(The Melody of Love) Chizeru believes that Kaitou hates her, and is therefore scared of him. Things just aren't what they seem on the surface though.

5) Yuuwaku Lesson Itashimasho by Hina Sakurada
(A Lesson in Temptation) Himawari has never had a boyfriend in all her seventeen years, and she has also rejected every person who has ever confessed to her. But when she meets her new, shining and beautiful student, Taiyou, all reason just flies out the window.

6) Platonic Porno by Komomo Yamada
The go-to girl for love advice has never had a boyfriend? Her geeky chameleon teacher finds out, but how? How can a chameleon teacher also be an erotic novelist?!
(Also included in Kojin Jugyou)

From Intercross:

For all of Mao's life, she has longed to be girly and have tea parties with beautiful girlfriends. And finally, she has that dream right in her reach, until she walks in on three boys changing at her private all girls school... What's a girl to do when another girl she admired turns out to be a guy?!

From Shoujo Crusade:

Karin HATES guys. She can't stand the sight of them, let alone be near them. But after a near death experience she finds herself waking up to a guy she doesn't know, within a guy school and in a guy's body!!?!

From Shinmakoku Scanlations:

Yosemine Takumi is a difficult student to handle. He's used to get what he wants by using his family's strength in school. The new Infirmary Nurse, Tsutsui, is determined to change all that. He's not going to let himself be bullied by Yosemine, or anyone else, after all these years. But Yosemine has fallen head-over-heels in love with Tsutsui-sensei and set the goal on owning the nurse for himself!

A boy and a girl are forced to join hands for all eternity!?
In a land ravaged by an epidemic known as "Troy", the only people with healing arts capable of stopping the seizures caused by the disease are the Sisters. Although they have a high resistance to the disease, they are searching for a person who is truly immune, so that they can find a cure. The main character is Sister Elraine, one of the Sisters who becomes infected with Troy. But, when she touches Kiri, a seemingly ordinary boy, her seizures stop. Could he be the one!?

In volume 1 is included the oneshot Island:

A story that takes place on the day Aira turned 14, and learned the devastating truth about the island she lives on, which is completely surrounded by a huge wall...

Tsuchie Takeshi has dreams of when he played with Hikari-chan as a child. He remembers her as a kind, sweet girl. However, one day on the way home from school, Takeshi is abducted and taken to a huge house, only to find out that she's become an arrogant, violent dominatrix (emphasis on violent). Furthermore, she says that he promised to marry her! How will he adjust to her new personality, and living with her as a new son of her prestigious family?

From Fantasyshrine:

Usami is a chef of an Italian restaurant called MIYA. One day, the whimsical owner decided to turn her restaurant into a "bishies restaurant"! Usami refuses to be part of this frivolous idea and will do anything to get out of it. Which led him to strike a deal with the owner. So now he’s stuck training Komiya, the spoiled, playboy son of the owner, to take over the business. But Komiya decided to make a deal of his own—!

[From ShoujoMagic]: A collection of short stories from the pages of Sho-Comi! Story 1: Side Seat de Daite. Mamii is in love with Sawaii, the person everyone considers to be a dork. When she confesses to him, he tells her he has conditions for dating her. What are the conditions? And is Sawaii the person she really thinks he is? Story 2: Brazen Lovers. three chapters Yuuna's mother moves them everytime she breaks up with a boyfriend. This new place is a real dump. Annoyed, Yuuna heads off to the beach where she meets a very sexy guy. Sou says "Lets always be together." but when Yuuna wakes up he's gone! Two people like this are bound to meet again... Story 3: Feel It, Roast Virgin. Rika is a virgin and is very nervous about her first night with her boyfriend Yuuya. It doesn't help that Yuuya tries to do it everywhere, outside, at school, he's ready! But will Rika be ready? Story 4: St. Gal Chick Valentine's Day. Mika's school has separate buildings for boys and girls and the girls have asked Mika as a student representative to get them co-ed classrooms so they can spend Valentine's Day with school idol, Subaru. Mika vows to try her hardest, even though Subaru annoys her. But maybe he's not such a bad guy. Story 5: Secret Apple. Sakura Kazuki and Katou Ryu are lovers who have been meeting secretly for two years. Because they were once step siblings, and their parents had a messy divorce, they can't tell anyone. Will they ever be able to love freely? Story 6: Double Face The Dangerous Classmate. A short 6-paged funny.

From Solaris-SVU:

"When the sinister Dark Guy and his evil army, Black Pierrot decide to take over the world, they decide to start from the Japanese countryside. Luckily, however, the great hero Blue Hunter is there to thwart him. But when Blue Hunter saves the young maiden Tachibana Honoka, he finds himself assaulted on another front... By her affection. Now he must juggle defending the earth, dating Honoka, and simultaneously trying to get her to take notice of his homely true identity, Fuwa Shinpei."

Childhood friends Chihiro and Keigo are living together under one roof. They're lovers, but they've only ever kissed once. To Chihiro, it hardly even feels like they're going out, and he's getting impatient! And on top of that, he suddenly has a rival!? It's ever-loyal Keigo and headstrong Chihiro's heart-pounding, heart-breaking LOVE!!

-DMG

An entertaining romp from Modoru who has once again veered away from her dark side and visited the side of her humorous stories. Of course it's still rather twisted. A couple of high school delinquents (Teru and Miki) discover that despite being from opposing sides, they have no objection to a bit of a sheet tumble with one another. Doggie-style refers more to how one of them is referred to as a dog by the other. Neither of these guys is an innocent, and it will be interesting to see where it goes.

The series was named after the Slam Dunk doujinshi "Dog Style" Modoru wrote in 1994.

When the hot-tempered Han Hye Won accidently insults the handsome jjang of Han Hwa Go, Sun Woo Bin decides to pay her a visit... with his entire motorcycle gang, ready to see some blood. So how does that lead up to a kiss and the infamous captain begging for a date? Do you want to try?

Japan in the future has a massive over-population problem. Scientists have traced the root of this problem to one particular individual, Junta Monamari. According to their records, Junta was a "Mega-Playboy" who had sired children with over a hundred women. Each one of his sons had inherited the Mega-Playboy gene too, so the problem grew exponentially from thereon. Enter Karin Aoi, a "DNA Operator". Karin is sent back to the past with a mission: to alter Junta's DNA and prevent him from ever becoming the Mega-Playboy, thereby eliminating the world's overpopulation problem. Junta's DNA can only be altered by shooting him with a special bullet called DCM which contains the chemical for suppressing the Mega-Playboy DNA. In return, Karin gets a vast sum of money... enough to make all her dreams come true. Will Junta become the playboy he is destined to be, or will his better self prevail? But Karin is falling for the real Junta too... and what of the sweet and kindly Ami who has secretly loved Junta all her life? What will happen to future Japan?

Diotima is set in 2092, far in the future. This manhwa is considered sci-fi for that. However, the manhwa's plot is "life". The episodes involve lives of captain Namer Joon and her crew onboard the space vessel, Diotima. The plot goes a little further and tries to convey conflicts between Earthians and Moon settlers. There are clearly some mysteries about Namer Joon, Diotima, and its creators.

Jeong-Hwan received a letter from his sister Ji-Yeong that said, "Please rescue me, the devil is here!"

His sister goes to an all-girls school and in order to rescue her, he must disguise himself as a female student. In this school, all students are candidates to become "the bride of the devil."

A certain boy decides to summon a demon to help him with the search of his beloved...