Aruna is the princess of B Kingdom. One day, it is decided that she will marry the king of E Kingdom, a country known for it's bloody conflicts. This is the tale of a girl who carries secrets and ambitions, and a game in which love, pride and life will be played.

The World consist of the upper, the middle, and lower classes.

Those who are wealthy live in the Town.
Those who are poor live in the Fields.
Those below, in the thick and gloomy Forest....

In the Fields, Takaoku Restaurant's show girl, Kiyoko, supports her mother by managing the food preparation. One day, a regular patron named Tanaka, who recruits day laborers for the underground, requests that they bring meals to an assassin from the Forest called "Yorukumo," or "Night Spider."

Yorukumo was born in the Forest as a disposable child, raised to be void of emotions, unable to feel pain, and without knowledge of reading and writing. With Tanaka's instructions, he easily handles assassin jobs daily. When Kiyoko and Yorukumo meet, the World begins to come apart a little at a time.

Violence, abduction, extortion, drugs, blackmail… This gang will do literally anything for money.
One day, they kidnap a young girl, physically and mentally destroying her in the process. Seeing what was done to his beloved daughter, the girl’s father loses his sanity, his anger turning into an obsession to find and torture every member of the gang, to ensure they die in the worst imaginable ways. Fires of revenge rage in his heart, and keep escalating. How will this tale of revenge end?

A spinoff of Ore no Imouto ga Konnani Kawaii Wake ga Nai following Kuroneko's route. This manga is a new story based on volume 15 and 16 of the Oreimo lightnovel written by the original author Tsukasa Fushimi. Not to be confused with Ore no Kouhai ga Konna ni Kawaii Wake ga Nai, which is another spinoff.

Science fiction action that begins with Boy meeting Gyaru!

Because of a misunderstanding 8 years ago, Jung Da-ae and Lee Han-eol are mortal enemies. To make things worse, their siblings get married making these two in-laws! But then the bride and groom are killed in an unfortunate accident. In a moment of mourning and arguing in the middle of the road, Jung Da-ae and Lee Han-eol are hit by a truck, killed and transported back to when they were in high school! Is this their chance to fix everything?!

From Chibi Manga:

Just when I thought it'd start with you, you disappeared; I would've never thought this...

Yuna has lost trust in love after her first boyfriend Takumi broke up with her. Shiina-kun from her class has already confessed to her twice and now finally she approached onto love another time. But Takumi appears in front of her!! What will the swaying Yuna do!?

A yakuza marriage royale filled with deception begins!

Having received news that the one who manages to marry her will have all of the world in their hands, Ageha, the granddaughter of chief of the Tsukishiro gang, gets targeted by yakuza from all over Japan?!

"I still haven't had my first love though?!"

Although Mio wanted to become good friends with Haihara-kun who transferred to her class. But the first impression she received was the worst ever! But since with her grades, she was in danger of getting retained for a year, she has to go beg Haihara-kun to help tutor her??

Marriage of teacher Ojiro and high schooler Fumino, whose parents have passed away. Includes a total of five stories following their wedding day.

This school is funded by Kagarizuki family. Kagarizuki family has 4 sons and Setsu is the youngest one. Moreover, he's an idol at this school. On the other hand, Misaki Chiyo seems to hate Setsu.

The truth is that Setsu is a vampire, and he always drinks Chiyo's blood. Why does she give her blood to someone she hates? Is there a secret between these two?

From Chibi Manga:

Natsuho visited an abandoned shrine during her high school trip; after the school trip, strange things kept happening to her - like going back in time. What's even more weird is lone wolf Kayano, staring and following her around.

The main character and “anti-hero”, The Rapeman, is a high school teacher by day and dispenses his surreal brand of “justice” at night under the business “Rapeman Services”, which is co-run with his uncle, a former surgeon. He uses rape as his weapon. The business' motto is “Righting wrongs through penetration”.

Clients call on The Rapeman to handle cases such as the revenge of a jilted lover, forming parental bonds through a traumatic crisis, making disruptive co-workers more docile and other things of that nature. When engaged in his night trade, The Rapeman wears a black leather ski mask shaped like the head of a penis but no trousers or underwear. In the middle of a rape, if the woman became unresponsive or appeared to be enjoying the violation, he would use a “special technique” such as “M69 Screwdriver” or “Infinite Loop” to apply more pain to the victim. He sometimes has regrets for the contracts he fulfills, but he always does the job.

The story of a middle school girl trying to find herself in the confusion of adolescence.
Skateboard-loving Ichiri Sanjou, nicknamed "Icchi," may look like a normal energetic kid, but whenever she sees the full moon, she is hit with a wave of emotion she cannot comprehend.
The series revolves around her learning the Afro-Brazilian martial art of Capoeira.

"Maybe I've been waiting for such a moment for a long time!" While being estranged by his daughter and being blamed by her wife, middle-aged office worker Iwashita lived modestly in his own way. This was his norm at least until he met a girl, Shiina, who suddenly appeared one day in front of him. She approached Iwashita as a 'customer' for "a meal for 20,000 yen". A story of a small escape begins with a painful and dazzling 15-year-old girl seeking her own value and a 40-year-old middle-aged man struggling between reason and desire.

*record scratch* *freeze-frame on Haru Koyama getting choked by a horny naked dude* Yep, that’s me. You’re probably wondering how I got into this situation. Not by choice, I can tell you that! It started when my weirdo classmate, Chiba, tried to save me from a runaway truck and got us both killed instead. Idiot. Then we got transported to another world, which I guess is like an otaku dream come true, or something? Chiba ends up with cheat abilities, and what do I get? Nothing! Lucky me, I get to be a sex worker instead. Gotta earn money somehow — but since I have to do it, I’m gonna kick ass at it. This world treats women even worse than the one we came from, so things get…rough. Still, I’ve made friends with some girls, and if I can juggle Chiba’s idiocy and Sumo the virgin’s emotions on top of all the various kinks my customers throw at me, things will be all right…won’t they?

The protagonist, Masaru, has just inherited a big fortune after the death of his father. However, people are trying to get their hands on it by any means necessary, even if it means killing him. Narumi helped Masaru from being kidnapped after fighting some weird guys. He found out that they're not humans but wooden puppets with amazing strength. After a hard fight, Narumi was forced to admit that he's no opponent for them; and just when he started to think that Masaru would be captured, Shirogane, Masaru's watcher arrives from France with a weapon, the puppet Arlequin. Here, begins the story of Karakuri Circus.

You can't leave this island until you've killed 100 people. The most deadly survival game begins on a solitary island where desires swirl and only the strongest survive!

From DrCoke at MangaHelpers:
He has never been the type to stand out in the class. Kurihara Yuzuru has lived life by avoiding entering the lives of others, staying to himself. The story begins where he has to go to a whole new school, which means new classmates. He lacks any confidence to make new friends, so the fear of rejection drives him into a wish he never thought he would make. This single wish leads to a first day of class he would never forget. Yuzuru will have to make choices that will significantly alter others' lives, choices he could never make in the past.

Crow, the loyal butler of a villainess, realizes through a series of chance events that he has in fact been reincarnated into another world.

With a new perspective on life, he realizes just how badly he's been treated by this haughty, egotistical and prideful noble lady he calls his mistress until now, and boils with rage at the injustice.

However, after deciding to take revenge on her in a risque way, he comes to realize that she's a lot easier than she looks...

This is a story of how a reincarnated butler tames his villainous mistress in lustful ways, but ends up making her truly happy.