Many years, years later, at the Mediterranean Sea, there's a legend about him. A young man with white skin comes from the deep sea, has appeared. By using the God of Death's dance, he's harvested many lives. His eyes are black like the starless night sky.

Right as Asmodeus was on the brink of being awakened, an obscene and devilish "siren" appeared. All who are seduced by this evil spirit will find themselves immersed in lust and end up getting destroyed. Meanwhile, a crusader known as "Bato" finds himself lost and struggling after losing all his comrades in a war that was influenced by evil. But as he finds himself seduced by the Siren.

http://www.lezhin.com/ko/comic/siren

This is a world where there are three classes- Royals, Nobility, and Commoners. The Commoners are at the mercy of the Royals and the Nobility. There is magic, and an elusive siren...how does it all come together?

Content with her ordinary life, Lyra is somewhat of a wallflower. However, her comfortable lifestyle suddenly goes astray when she accidentally plunges into the world of sirens. Entangled in a curse, Lyra will learn that her world may be a lot bigger than she had ever imagined.

A law-breaking 4 page comedic short of Devilman.

As the end of high school looms near, Mayuko is unhappy with her performance in the last mock exams. Nudged by her friend Megu, she seeks help from Haru, another classmate. They become friends, and maybe, just maybe, something more.

The story of a boy and a girl who met in an era of witch hunts.

From StudioRobb:

This is the story of a teenage boy named Takeru Tachibana and his struggle to recover his sister Sayoko from a "cyborg dogfight circuit". When Takeru was 10 years old, his town was bombed during an enemy air-raid in which his parents were killed and he was mortally wounded. Sayoko, cut deep with "survivor's guilt" and a "co-dependent" inability to deal with living alone, rashly sells her brain to the Albion Corporation run by a mysterious CEO named Véltare Marçeau in order to pay for a risky surgical operation that Takeru may or may not survive. Her brain is placed in a cybernetic body, the process of which essentially eliminates the brain's memories and heightens its aggression. Her new identity is The White 13, or "The Ice Doll", and for the next five years she is placed on a dogfight circuit fighting other cyborgs in gladiator-style extravaganzas where she eventually becomes the grand champion and obtains the rank of "sirius"...

The story begins shortly after Takeru has liberated his sister from the dogfight circuit only to discover that, outside the cicuit, Sayoko's brain has a "self-destruct" mechanism and that she is dying. Takeru has one week to find a way to cure his sister or return her to the circuit or she will die. Adding to the problem are the "dogged" efforts of the Albion Corporation to recover "their stolen property" as well as a cast of characters who all have their own scars of some sort...

Shiho, Cocoa and Himeka are three sisters who live together with their protective older brother. As their parents are off traveling the world, the brother has taken on the parental role as well as taking point in the bakery that all the siblings operate. As a result, the brother has developed a sister complex, becoming, at times, overbearing to Shiho, Cocoa and Himeka. This is a comedic story about their little weird family.

On the lookout for a boyfriend suited for his little sister, Takemiya-san stumbles upon something quite unexpected.

Even in high school, Ritsu and Uta really get along. Suddenly, they have to pretend to be lovers...!? The real brother-sister exciting love comedy starts!!

I do not dislike my sister. Any older sister would love their little sister. I have a younger sister named "Sakura no Shin". She is extremely cute. The sister yuri comedy everyone is talking about!

An older brother worry about his sloven little sister. Does he need to worry though?

Shou, the older brother, and Saya, the litlle sister, only have each other. The two of them lived happily, enjoying their peaceful lives together. That is, until Saya was bitten.

When bitten by a pure-blooded vampire, the one who was bitten may themself become a vampire, as was the case with Saya. She can't leave the house out of fear that she will feast, and her brother must lock her away to protect her from vampire hunters, such as himself. The only solace she has is being taken care of by her beloved older brother, whom she knows has eyes only for her, and vice-versa.

And so, Shou has made it his goal to kill the pure-blooded vampire who bit his sister, believing that in doing so he may restore his sister to what she once was, and becomes an expert for that. But since Saya was bitten, she has become increasingly obsessed and forceful. She can't stand being mere siblings anymore, and Shou is having a hard time holding back.

Will Shou give in? Or will he kill the pure-blooded vampire first? And even if he does, will that be enough to stop the romance forming between the two of them?

Contains six short stories:

• Kuzeinke no Saidai no Show

• Seifuku wa Hugenai

• Brigit no Bansan (Brigit's Supper)

• Shizuru Cinema

• Kasou Senryaku - Kagami-uchi (Mirror Play)

• Emerald
Who cheated? Who Won? The lies and the truths? In the city of west where injustice prevails. Only a 'game' divides the living and the dead.

From the DrMaster manga outlet site:

This is the story of Mahito, Alice and the "The True One"

All sorts of odd things begin to happen when Mahito survives being rundown by a car traveling at high-speed. What lurks behind the world of the living? What is it that hides just out of sight of human perception? There is more to our world than our eyes reveal, as Mahito, a young High School girl, is about to find out. Questions mount as one thing becomes painfully clear; Mahito did not survive her accident at all.

Modern-day vampires, the occult and hunters of the undead... 'nuff said!

One day, the diligent and chaste Sister Erna's church is attacked by vampires. The pleasure from the venom in their fangs overwhelms her body and sets her heart and her mind at odds. Thus rises the curtain on a bewitching vampire romance!!

Official Italian Translation: https://www.animeemanga.it/2019/09/12/sister-vampire/

Haruka (14) and Sakura (12) are sisters. Yoshiko (14) and Mai (12) are sisters as well. So what happens when best friends Haruka and Yoshiko have an attraction to each others sisters of the Yuri kind?

From LINE Webtoon:

A medical student passionately falls in love with a fallen goddess during his volunteer abroad in Nepal, and he desperately tries to fight off destiny to save his love.

Nirvana Page wanted to see the world. Traveling by private seaplane with her father on their annual vacation, together they explore exotic places and discover remarkable wildlife, and even if it’s only for a few days, she gets everything a seven-year-old girl could hope for. That is, until a mysterious force crashes their plane, separating Nirvana from her dad, and stranding her in a strange and unfamiliar land. It’s there she encounters SITHRAH—a mysterious being who could hold the key to finding her father—and begins a grand and perilous adventure that will bring her to the end of the world and beyond!