Three years ago, Katsumi Yu headed to Africa for a volunteer project as a doctor. However, soon after, a civil war erupted and he was captured by a guerilla group who was desperate for a doctor to treat the injured. He kept doing what he came to do, help people in need, and he does this for several years. But with the regime change in the country, the guerilla group was hunted down and Yu was forced into a situation of kill or be killed. He quits being a doctor soon thereafter and gets a tattoo of Lucifer on his right arm as a reminder of his past crimes.
Although Yu returns to Japan, he spends his days drinking. After a night of drunken brawls, he wakes up in a clinic run by Dr. Minatono. This shady looking clinic takes in all patients, even those without insurance and those who can’t pay at all, but still maintains state of the art equipment. It turns out Dr. Minatono deals with clients, such as the mob, who are unable to go to regular hospitals due to legal reasons and in exchange receives exorbitant amounts of money to help keep the clinic up and running. At first, Yu rejects the job offer from Dr. Minatono, but situations keep coming up that keep him busy in the surgery room.

An angel and a demon who're conducting a mission on earth end up killing a human named Haruto by mistake. Haruto, who has no reason to live, accepts death... But for some inexplicable reason, his soul can't go to heaven and he becomes a wandering soul. With a mission to accomplish and the guilt of having killed someone weighing heavily on him, the angel asks Haruto to become a Shinigami and help them out. In exchange, he promises to give Haruto something that will change his ‘life’ and his future forever.

The day the little aristocratic tyrant, Roel Ascarte, met his younger foster sister was the day he regained his memories of his past life—and realized that this was the world of a popular gal game that he had played before. What’s more, he was the main route's antagonist! Just how can he avoid his demise? Now that Roel has awakened to the system, he sets off on the path of self-preservation!

Mui-kun always had the animal magnetism... with animals. Unfortunately, it never worked with girls until his childhood friend Yuzuriha suddenly begin to take on various animal aspects, starting when she was offering a dance to the mountain spirit as a resident shrine maiden . Now she involuntarily takes on the animal spirit whenever she comes across one, most of whom disdain the confinement of human clothing...

Even if it's denied, even if it's misunderstood, that's okay because that is my love for that person.

The hated Ophelia, the young Duke Rosenstein's wife, is rumored to be a domineering woman and a huge spender. Yet all that is a ruse to fake her dedication to her husband. After their marriage, Ophelia soon realizes that Orpheus has a lover. In order to cleanly divorce him, she continues to act out her ruse.

Ophelia wants to quickly separate from her marriage while on the other hand, Orpheus refuses to let her go...?

Saori and Shiori are twin sisters. They both love each other, but think their loves are unrequited!

From Paperdolls Project:

17-year-old Yuzuhara Kohane has no interest in skincare and make up. However, she dislikes being called ugly by the beautiful Iori who just happens to be the genius of makeup and son of a famous cosmetic company. One day, Yuzuwara asks Iori to make her beautiful and receives a makeover! She begins to take an interest in it little by little and it becomes a beautiful opportunity for love. Makeup Cinderella love story!

Sagawa-san is a high school girl with a personality that can't abandon people in need.

She goes to visit her classmate Mizuno-san, who was absent from school, but she sees her outrageous state...!?

(It's a 3 parts one-shot, each 20 pages. It's unknown if this will get serialized)

Author's Pixiv: https://www.pixiv.net/en/users/1601489

It is a funny love story about a high school girl called Momoka who loves wrestling, and Kuga, a wrestler who looks like a bad guy and often plays the villain but has actually a pure heart. Momoka is a huge fan of Kuga and keeps sending him supportive messages on Twitter. She even sent him a fan letter and one day after one of his matches he suddenly calls her… That’s how the clumsy love story of those two starts.

Hideo Suzuki is a thirty-five year old mangaka assistant struggling to be the hero in his own life by breaking back into the lime light with a new serial all the while juggling his relationship with his girlfriend and his own delusions. However, as hard as Hideo may try, the world seems to have a different set of plans for him; sinister and dark machinations that completely overturn his reality as he knows it. Nominated for the 3rd and 4th Manga Taisho Award (2010 and 2011).

Ginger Torte and Lerajie Atlanta, both noble daughters of marquesses, are lifelong enemies and rivals. When Ginger’s fiance, Kishon Mickelson, is stolen by Lerajie, Ginger decides she’s had enough!

But one day, Ginger stumbles upon a strange novel - one where Lerajie is the main protagonist, and she is the villainess! She tries her best to ignore it, but when things start playing out just as written in the story, she has no choice but to rely on the novel to change her doomed future as the villainess.

“Exactly what did I do to deserve this fate?! Why did I have to become the villainess?”

Enter the mysterious Prince Izana, the male lead of the novel. Confined within the depths of the Templar Tower for years by King Astor, he finally sees the light of day when his father passes away. But according to the novel, he’s destined to fall in love with Lerajie, leaving Ginger to wallow in her own misery!

“All I ever did was live life as best I could! But as if stealing my fiance wasn’t enough, now Lerajie is going to claim the male lead?! No way I’ll let that happen!”

The “villainess” Ginger, who now knows Prince Izana’s deepest secret (thanks to the novel), attempts to seduce him with -2% cautiousness and 200% cuteness!

Fed up with her NEET attitude, a vampire debutante's parents send her out in the human world where she must earn her own food

Only "heroes" can save a captive princess. "Danmachi" has restarted.
A fox person, Haruhime, is trapped in the "red light district" of the labyrinth city of Orario. Bell's fierce battle begins to save her!

This is the story of Mimitani-san, the tallest kid in her class, and Makigai-kun, the short boy in the seat next to her.

From: Easy Going Scans A young girl accidentally awakens a guardian spirit sealed within a sword. Together they will face many challenges in order to complete a mysterious mission given by the gods. They meet other summoners and spirits, face demons, and details about their past lives are revealed. 

The "new sibling romantic comedy" revolves around Masamune Izumi, a light novel author in high school. Masamune's little sister is Sagiri, a shut-in girl who hasn't left her room for an entire year. She even forces her brother to make and bring her meals when she stomps the floor. Masamune wants his sister to leave her room, because the two of them are each other's only family.

Mariko and Shii-chan have been friends since middle school, and have maintained their friendship over the years. But Shii-chan, now an OL, suddenly hears on the news that her friend has killed herself. In shock, Shii-chan searches for the reason... The reason why her broken friend had finally committed suicide.

This story deals with suicide and its aftermath, plus abuses of all kind that preceded it. Reader discretion is strongly advised.

National Suicide Prevention Lifeline (US):

1-800-273-8255

Meet Kento Oonari, salaryman in hell.
Overworked by his bosses, his head surely whirled.
He dies, but meets up with a god called Raidel
Who tells him that he’ll be sent to a new world.

Kento's fairly cautious - he’s read this before.
And so, to the god, he begs for one thing:
“I just want to live a slow life, nothing more.
“Just give me a house and a skill for farming.”

So Kento is sent to a medieval age
To live a nice, slow life. But what a surprise!
The god gave him the powers of a Great Sage!
And Kento used magic in front of commoner eyes!

So join us today, as we read of this man:
His cheat skills, his slow life, and his little girl clan.

Original WN: https://ncode.syosetu.com/n4302es/

From Decadence:
Once you fall for someone, you can't stop the love. A strange encounter spurs the meeting of Amakusa Ryou, a high spec businessman who's loose with women, and his high school sister's best friend, Arima Ichika. From there, he falls madly in love. On the one hand, he approaches her with almost too straight-forward methods, while she responds simply disgusted, insulting him without hesitation...and he takes it as her way of showing love. This is a romantic comedy about a twisted elite employee and a normal otaku high school girl.

Part of the Kantai Collection franchise. Serialized in Famitsu. A story about Destroyer Shipgirl Shikinami picking up Jazz.