From JanimeS:

Kang Han-Se and Ban Ha-Da have known each other ever since childhood. They are close enough to sleep in the same room together, even at their current age.

"Three men for you," Kang Han-Se's mother tells Ban Ha-Da, on the day of graduation. As soon as Ban Ha-Da's life as a high-school student starts, her love life begins as well.

From DMP:
Minami is a young actor who has been cast as the main character of a superhero TV program. Although he takes the job half heartedly, thinking of it as a mere children's show, he's soon taken by the talent of his costar, Sawada. One day, Minami stumbles upon Sawada kissing a man! Deeply confused, he's unable to hide his growing attraction for him... A hero's love is always filled with trials!

Just when Park Sang-Euk was about to take a hit from the opposing gang, he was saved by a mysterious masked girl. The girl took down the jjang and his cronies in the blink of an eye! And now Sang-Euk is determined to find out her identity.

Suzune never got along with her cousin Yuuma when they were kids. Now that she's in high school, though, he suddenly shows up again after years of separation, and he's like a completely different person -- he's become cool and good-looking! Yuuma says that his grandmother told him, "Protect Suzune," and so now he wants to live with her...!?

Yuuto Sasaki is a trap who forces his homeroom teacher Sasaki Tsukimori to spend some quality time after school, which usually entails Sasaki playing a domineering role over Tsukimori.

Note: Original language image is not available.

Nana, an apathetic 24-year-old with nothing much in her life, suffers a car accident and wakes up in her 14-year-old junior high body. As she lives through each day, she starts to remember things she buried deep in her memory, and she can now not remember being involved with her older sister, whom she deeply admires, and her sister's first love, a senior at her school.

Explore the lives of the famous-yet-not-so-famous people of history; such as Nikola Tesla, Ty Cobb, Typhoid Mary, the woman behind the Winchester Mystery House, Kou Yoshio, and many more.

Series of one-shots published between 1989-2003, released a tanko volume in 2004 and a bunko release in 2012.

Although the family vacation was cancelled, our heroine decides to go forward alone. However the onsen inn turns out to be an extremely weird place!

Not only is the staff all male and the gorgeous managers (a pair of brothers) are constantly fighting over the right to inherit the inn, even monkeys visit the springs as though they own it!

How will our heroine ever get out of this mess?

Our world is too normal. Heroic fantasy is much better, isn't it? Follow the adventures of an apprentice magician, her talking cat, and two great heroes... NOTE: French OEL

From Houkago Scanlations:

Shiki threw everything away for the sake of revenge. But at the new school where she disguises herself as a male, she meets 4 popular rich guys... Haru (spring) the prince, Natsu (summer) the bishounen, Aki (autumn) the womanizer, and Fuyu (winter) the cold-hearted genius.

What awaits Shiki? And will she get her revenge...?

Hayate and Kusanagi are best friends. They are pretty popular in their high school, and they always attract a lot of "unwanted" attention because of the ambiguous attitude that Kusanagi harbours sometimes torward Hayate. Invited both to a students counsel's sponsored meeting about UFOs, they stumble upon Hayate's little brother, Tatsumi. Hayate gets into an argument with him because he thinks Tatsumi shouldn't be there. And Hayate didn't know ho much he was right, when, after the meeting started: a UFO crashes nearby the student group...

From Brolen:

This is a horror/sci-fi story about a giant planet consuming creature from another dimension that a scientist discovers and mistakenly identifies as a planet. Being given the honor to name it as its discover, the professor chooses to name it after his only daughter, Remina, but when Hellstar Remina is headed on a direct collision course with Earth the world goes nuts and all the people in the city start a witch hunt to kill Remina, thinking she is somehow to blame.

Hellsing, an organization devoted to the elimination of the vampire threat, has recently uncovered information regarding the attempted production of "man-made" undead. The world is presently in the thick of WWII, and the current leader of Hellsing fears the Nazis could potentially use these creatures as front-line super-soldiers. Although the technology of creating artificial vampires is still in its infancy, it has advanced enough to be a serious threat. In an attempt to put a stop to this perverse and dangerous experimentation, Hellsing has sent two of its most skillful agents to Poland. A young man by the name of Walter C. Dornes - a.k.a. "The Angel of Death," and Alucard, an ancient vampire currently in forced service to the Hellsing Organization. Together, they attempt to stop the progress of the Nazi's efforts.

Story 1: Suna no Tiara
On their way to Eden, princess Tiara and her subjects are attacked, and only the princess survives. Follow her in her quest for revenge.

Story 2: Hatsuki Triangle
Hodaka Hatsuki takes on the personality and abilities of her old boyfriend everytime she touches a practice sword for the Kendo club. Kunie Kenshi is determined to make her normal once again.

Story 3: 700 Nichi no Blue
Oikawa Masumi tells about her work on a painting titled "Blue Magician" and the man who helped her.

From Nakama:

A novice mortician who takes care of death, and a surgeon who saves lives. They’re in very different positions, but the distance between them is closing…

When a kid Mineko found claimed he is looking for a saviour of his decreasing powers, what is a girl supposed to do? Furthermore Helios, the ruler of the magical world, DESPISES humans!... But naive and kind Mineko will not be put off, she is determined to help him and along the way they will both find beauty in love and friendships... Summary by harliey_nick [Manga Rebels] From Baka-Updates: In the Helios Eclipse series: 1. Prologue 2. Median 3. Ternion 4. Quaternion 5. Quintet 6. Hexad 7. Septenary 8. Epilogue NOTE: This is an OEL from Malaysia

From MangaScreener:
A professional baseball manga by Harold Sakuishi, the author of Beck.

Taiko Busujima is a powerful young pitcher looking to make it into the Japanese big leagues, but what he didn't count on was being signed to the Keihin Athletics, the cheapest and worst team in the league. Can he help turn the Athletics around and (gasp) win the pennant?

A gripping, edge-of-your-seat story loaded with Sakuishi's brand of wacky humor.

Tezuka Ringo has moved to a new school because he didn't want to be apart from his best friend Kei. However, things don't go as Ringo had planned. He ends up sharing a room with Kurosaki Riku (a very attractive young man a grade above Ringo) and things then go downhill for him. Sure, Ringo didn't mind when he first saw Riku (because of how pretty he looked), but things start to heat up once Riku starts making not-so-subtle passes at him; also including him sneaking into Ringo's bed and touching him. Ah, young romance.

Contains oneshot called Ren Chaku.

From Yen Press:

Rebellious Chiwoo is the town outcast. Without his parents to raise him, he finds this world a difficult place to fit in. If only his mysterious father would just show himself! What secret could drive them apart? When his father suddenly reappears, Chiwoo learns that his father is a Mangnani, a mysterious executioner who carries out God’s judgment. Only his father’s dance prior to the beheading of a sinner determines the fate of one’s afterlife — either forgiveness from God or eternal damnation. Now on the run from an Emperor determined to obliterate all Mangnanies and their heirs, Chiwoo must fight to fulfill his destiny!

Matsushiro Atsuya is from a very wealthy family. In order to prevent his childhood friend Kyousuke from moving away, Kyousuke was appointed as his servant. However, now they're in high school. Atsuya may be falling for Kyousuke, but it may be a one-sided love.

3) Timid student Miyako Yousuke is being followed by fellow student Ayusawa Takashi, who says, "Please let me hold you!" Is he a crazy pervert?

4) Security guard Kurafuji is scared of ghosts, so patrolling the dark hallways of Ginseigakuen Boarding School is a test of courage! But he can always count on the bright lights of the art room and Ooga-Sensei to be waiting for him.

5) Shiro didn't expect to spend his summer vacation helping his father broker a deal with a small desert country. But Prince Remul only wants one thing: Shiro.

6) Extra about Atsuya and Kyousuke.