A mysterious transfer student arrives to the third year, class C for Hanazono Girl's Middle School.
Akane is a plain and simple girl who was tired of her over bearing Friends, and silently thinks that it is o.k for the world to be destroyed. However, all the girls of the class wake up to find themselves in a desolated school, with count down timers. Every girl is tied to another one, and this pair must survive a 7 day Battle Royal. As it turns out, Akane is tied down to the mysterious transfer student.

Friendships crumbles, hopes are lost and sanity is tested as the game starts of with a bang!

A shounen story where 2 teenagers went back in time to the "Three Kingdoms" period of China. An entertaining action series with some light moment & a bit of romance. You also get to learn a bit about that era.

From JanKenPon:
Middle schoolers, Shiro and Masumi, encountered a mysterious dragon that brought them back to the time of the Three Kingdoms; situated in ancient China. As soon as they arrived, they were rescued by the Han Kingdom. Not long after these events, Masumi was kidnapped and Shiro barely escaped death... Soon the story gets more complicated as they are stuck in the past.

In 1997, Ryuurouden won the Kodansha Manga Award for shōnen manga.

It's the year 2034 and high school student Sasaki Hiiro boards his bus just like any other day. Everything changes, though, when his bus is suddenly attacked by a mysterious girl with red eyes. When Hiiro awakes, he finds himself in "Tokyo," a city which was supposed to have been permanently sealed off after the outbreak of the deadly Pandora Virus ten years ago. Not only that, but it also seems like all those being gathered in "Tokyo" are developing new inhuman abilities. Now, among the ruins of Shibuya, Hiiro and his friends must discover why they are here and learn all they can about the terrible Malicious Code that is running wild in their bodies before it destroys them all!

Madoka is surprised to discover that her parents have won a 100,000,000 yen (one million dollar) lottery. To make things worse, they inform her of their decision to pursue their lifelong dream of becoming doctors. What will happen to Madoka who, when deciding to stay behind, is left to fend for herself in a family acquaintance's (the Asagi's) guest house?

Yuki is so ashamed of her figure that she refuses to go swimming, either at school or on the beach. She believes her ribs look strange, and hears that she can have plastic surgery to alter the appearance of her ribcage. Yuki goes to a nearby clinic that performs the procedure, but is told that she must pass a mental health assessment before she can have the surgery.

Includes:

1-3) Dreamers High
Ikuya is not interested in having a girlfriend or boyfriend. Ikuya's childhood friend Kishi just started going out with a boyfriend much older than him. Ikuya feels jealous of Daichi not because he's in a relationship, but because Daichi looks as if he's shining with happiness. But one day Ikuya accidentally saw Daichi and his boyfriend in their bedroom?!

4) In This Colorless World (Kono Iro no Nai Sekai de)
Miyamoto Kano presents the story of an ex-gangster and an elite office worker! "On the first snow day of the year, I let an outrageous man come inside. Inside my room, my body, and my heart."

5) Until the world ends (Soshite Sekai ga Owaru made)
Continuation of ch 4

5.5) Dreamers High Extra

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Part of Rules / Hydra Series ?

Mysterious murders have been taking place in town lately and everyone is uneasy. Anne may look like an ordinary teenage girl in plain human’s eyes but she has something unique that attracts Vampires. May it be her blood type or even something in her skin that makes vampires so attracted to her? No one knows... One thing is for sure, Vampires keep coming in the city she lives in and they are even in her school now! Luckily for her, she has her brother to protect her and also one mysterious new guy...

It's 1950s Tokyo, and only the Rose Cross Detective Agency dares to tackle cases the police refuse to touch. Enokizu Reijirou is an eccentric private-eye with psychic abilities, while Chuuzenji Akihiko is a surly used book store owner and part-time onmyouji with an encylopaedic knowledge of obscure supernatural trivia. Together with their associates, they seek justice for the victims of various odd crimes.

Stand-alone side story to the Kyougokudou series, which begins with Ubume no Natsu.

Thomas dreams of becoming a knight and is thrilled when he is admitted to the famous Walst School of Knights. There he meets several interesting characters, such as the free-spirited Bernard and the school genius Hermann.

From Storm in Heaven and one of their legacy groups, Bamboo Feathers:

In ancient China there exists an alternate dimension called Jusenkai, whose inhabitants, the Senkaijin, possess tremendous powers. One of them, YanLang, fled to Earth along with his rebel army after being defeated during his attempt to overthrow the Emperor. In order to capture the fugitives, the Emperor sent his elite soldiers to Earth after them.

LiFang has been traveling alone to find his father's murderer when he picks up a sick and injured man. That aloof man, TuoRen, turns out to be one of the imperial soldiers sent to earth to hunt and capture the Senkaijin rebels. While his comrades work in pairs, TuoRen prefers to be alone. That is, until the strangely powerful human, LiFang, decides to follow him on his quest.

Note: The volume 5 extra is an unrelated short story, "Time Lag."

Japan is a seismically active country, so the occasional trembler isn't anything that people get too worked up about. They happen and it's unfortunate, but in general Japan is prepared. But there is one scientist who believes that he has found proof that a recent quake has triggered a cataclysmic event, and that within a year Japan will sink into the sea. Now if he can get anyone to believe him before it’s too late…
Also known as Japan Sinks, this is based on the award-winning novel and movie of the same name.

Mori and Ayumu are a gay couple in college in a happy relationship. However, after Ayumu prays at a shrine for them to always be together, the shrine's deity intervenes by turning him into a girl, and now everyone except for them think Ayumu has always been a girl.

A delicate short series about the relation between love, sexuality and gender.

Eraser, the mysterious enemy that invaded Earth 13 years ago!! Before their overwhelming power, the entire Earth neared the verge of collapse. But at the last moment there suddenly appeared Earth's lone savior, The Beast: an ultimate weapon uniquely equipped to counter the Eraser's power!! The Beast is part of the MAGIC Brigade, whose commander-in-chief is also the founder of our Le Prince Academy... Ladies and gentlemen, I present to you, Mr. Vincent!

From iskultrip Scans:

Uemura Takitarou is a Genius Cosplayer who can change himself from head to toe. One day, he finds his only friend, Asami Kusaka, killed by the Night Blindness Man, a serial murderer who gouges out the eyes of his victims. Tominaga Hana, a model, discovers his talent and recruits him for the company, UC, an office that solves mysteries and crimes by manipulating rumors/urban legends. Can Uemura track down the person who killed Kusaka?

Spin-off of Kurayami ni Strobe featuring Sawayama & Hase.

From Fujoshi Bitches:
“Tomorrow, I’ll put a curse on my father…”
Right after reuniting with his father, from whom he’d been separated when he was a kid, Ryou suddenly traveled back in time 22 years, during the peak of the bubble economy of the Showa era!
There, he met his father, Konomi, who was 3 years younger than he was…!
Living in an unknown environment with the uneasiness of wanting to go back to his own time, Ryou was anxious. But being comforted by the pure-hearted Konomi, his feelings gradually started to change… The first volume of Ike Reibun’s loved original work!

Kouki and Shiori are high-school students who fall in love for the first time in the month of April among the dancing sakura; but their experience with these new feelings is as tentative as the slightest wind of the changing seasons.
Even so, never a day goes by that isn't stirred by their first love. The scenery they view from inside the Ferris wheel, walking on the streets together through the rain?in this fashion, the red thread that ties these two together grows stronger as time passes. This is the story of how they live their lives through the first six months of their relationship.

"I'm pretty sure that the downfall of humans can be completely attributed to their curiosity", such is Ewon Jung's philosophy.
Because of his curiosity and his "affectionate nature", Ewon somehow finds himself, after cheating one time too many on Jiho, dumped and threatened into working as a caretaker for Jiho's new boyfriend, Mookyul... who just so happens to be a Mafia Boss.

And it is just the beginning of Ewon's troubles.

Between Jiho, who still burns at Ewon's infidelity, and Mookyul, gang-leader with movie star good looks who starts to take a keen interest in him, Ewon slowly gets entangled in a net more intricate than that of the dangerous underworld, how will he survive it?

Official English version
Publication by Lezhin

From Must Be Endless:

While holding a deep loneliness in his heart that he refuses to acknowledge, Yoshiki cares for his younger brother with the fiercest tenacity. At the same time, he sells his body to men, and despite the ridicule, he relies on their need daily. Amidst this lifestyle, he runs into a handsome younger man named Katou and begins to rely on him, while being manipulated as well. Yoshiki’s little brother, Naoto, and his classmate Shuu’s life-sized love story is featured as well. With a powerful, deep flavor, this is Kimura Hidesato’s World Compilation!

A collection of 5 one-shots:
Kuchibiru kara Hatsunetsu: Nohara Kasumi is a plain 1st year high school student. One day, she gets hit by a handsome 3rd year by accident and hurts her leg.
Taka then tells her to get on his bike?