I’ve been reincarnated into a world of strategic gaming where I acquired number 1 Rank!

I thought I would be reincarnated as a warrior in a gaming world that I know of, but I found myself to be a rogue lord who dies in the prologue! And I only have one day left before I die due to another country’s invasion..!

Use all your wits, courage, and gaming knowledge to face your destiny!

It’s a strategic fantasy where you risk your life to turn the tables!

Her everyday life has been suddenly soiled by blood and humiliation. Cheerful and popular high-school girl, Shibuya Mei was transfered to the other world and without knowing the reason why, she was eaten to death by monsters inside there. She felt every bit of "dying" in the other world and when she finally died, she found herself back in her world. It happened many, many times over and over again. She felt as if she was about to go crazy from the pain and sorrowful memories, when she met a boy - Akiba Yugami. He freed the girl from the chains of the virtual world she found herself in, but he wasn't so good as she thought he was. This is the story of a young girl fighting for her dignity.

His father is doing time for murder. His brother was arrested for murder. The second son of the family, Ryoga Ishida, is under suspicion of being involved with his brother. Under his fathers order he takes on his boxing pro test.

A prequel to Chaos;Child that details the life of Kunosato Mio before she got caught up in the events of the Return of the New Generation Madness. It starts from her childhood, and eventually leads to the point that she comes under Makise Kurisu's tutelage.

A demon world maid's cute and spooky fantasy action!

Sumire, a nekomata, who lost her favorite master was wandering around, got lost, and arrived in a foreign country in the demon world!? With the android and undead maids, clean the demon's house brilliantly to take back "that something"!

Artist's twitter: https://twitter.com/yugata_tanabe

Onizuka is a prisoner. For reasons that he only knows, he tells the story himself of what happened between him and Class G (which is basically an idol class), expect many troubles, adventures and of course many hilarious moments.

GTO - Paradise Lost is a sequel to GTO and Onizuka is now 24 years old as well.

Chuuta Kokonose is an orphan who lives with his aunt. For as long as he can remember he's had a voice in his head, but other than that he's been a normal boy—right until the day when a strange thing follows him home and teleports him to a place filled with even more fantastic creatures. It's a police station in space.

Surprisingly, Rein Brickke, the Chief of the Solar System Department, tells him that their computer chose him as a potential candidate for the solar-system's police force. However, Misuzu Sonokata, a girl from Chuuta's school with an angelic face and ill temper who turns out to be one of Rein Brickke's subordinates, doesn't think Chuuta is suitable for such a job.

Although Chuuta was shocked at first, he decides to take the aptitude test after being urged by the voice in his head. Most importantly, he wants to prove Misuzu wrong.

Unusual lily!?!? Super daily life of unfortunate high school girls !!!! The days that Yokoe Rei and Sugiura Kei spend are the extraordinary life of kicking drama!

In a swimsuit, a bunny girl, and clothes that kill virgins.
A little naughty anthology comic of girls in various situations and costumes by 9 writers!

Shun, Kaname, and the twins Yuuki and Yuuta have been friends since kindergarten. It's a little hard to tell if they actually get along or not - but even as high-school students, they hang out together. Recently, they've had a new addition; a half-Japanese transfer student Chizuru, who has started to liven up the group. This manga is really just about their daily lives, which aren't particularly passionate or exciting. A tranquil and sometimes comedic story of youthful friendship.

You ever watch that movie Junior?

The prestigious Arima family has an excellent butler. When the head of the family takes in an exotic-looking bastard-girl as a favor for his friend, it is up to the butler to tame her wildcat personality.

It's spring!

And for Suzuna, it's a new life that begins! She is officially a college student and finally has her own apartment!

Right from the first day, it's love at first sight when she meets Fukami, one of the tennis club's members and best friend of her new neighbor, Eichi. In order to become closer to Fukami, she doesn't hesitate and signs up as well, but she finds herself with quite an unexpected rival!

Pocket Monsters stars a Pokémon Trainer named Red and his rude Clefairy. It is chiefly a gag manga, using crude humor and slapstick.
The series diverges somewhat from the Pokémon video game and anime canon: most Pokémon can speak human language and regular animals (like birds and fish) appear alongside Pokémon. Evolution is also significantly different in Pokémon Pocket Monsters: Pokémon can evolve at any time, and they are also able to reverse the evolution.
-Bulbapedia

In a world filled with talking Pokemon, Red and Green compete with each other in a race to gather all the data needed for the new Pokedex! Bumbling Clefairy frustrates Red with its extreme incompetence and silly behaviour... however, sometimes Clefairy's bizarre ideas to work out in the most surprising ways!!
-Chuang Yi

From Del Rey:

Lucia is the new girl at school. She and her sister run a public bath that's all the rage. When Lucia meets a terrific-looking surfer boy, there's just one little problem: Lucia is a mermaid-not just any mermaid, but a princess on an important mission to save the seven seas from an evil force bent on taking control of the marine world. Such a responsibility doesn't leave much time for romance. But Lucia vows to protect her world and win the heart of handsome Kaito.

Tankoubon #7 includes 3 short stories

Get Nude
Moonlight Goddess Diana
Cherry Blossom

An ordinary high school student, Satou Ichirou, was born to a demon father and a human mother. Together with his best friend (← one-sided), the beautiful grim reaper Freddie, and the money-obsessed Rinto, who looks almost like a rabbit, he is enjoying his high school life in the demon world today!

In a future not too far away, androids that look exactly like humans begin to spread across the world. The android production company SA Corp. produced Giftia, a new kind of android that has the most amount of emotion and human-like qualities out of any other model ever seen. However, due to problems in technology, the androids have a service life, and once they pass that, it gets pretty bad. For this reason, SA Corp. creates a terminal service in order to retrieve Giftia that have gone past their service life. A new employee at the terminal service named Tsukasa Mizugaki forms a team with the Giftia Isla to retrieve the other androids.

This series features Michiru Kinushima as the protagonist.

The main character, Hazel (Maron in the original Japanese version), sets off to catch Pokémon after a scientist named Grandpa agrees to make a love potion if she catches Pokémon. Hazel is after the heart of a boy named Almond. Most of the Pokémon in the manga series can speak a human language. The manga's plotline has nothing to do with the original video games. Taken from Wikipedia.

Satou Shiki, a university student, was suddenly stabbed by a slasher only to be reincarnated in Labyrinth City. In this other world, he who has awakened to [Appraisal] and [Healing Magic] does a lot of “things”.

A romantic comedy with a distinctly Japanese flavor. Next-door neighbors Chiro and Ritsu have been best friends since childhood. Ritsu, the son of a family of traditional nichibu dancers, is thrust into the public eye as his career takes off, and his growing fame begins to test the pair’s friendship. And now the twist: when a wish made at a shrine actually comes true, Chiro and Ritsu find themselves inhabiting each others’ bodies. A further complication arises because Ritsu is not just a dancer, he is a famous onnagata, or female impersonator, popularly known as the “Courtesan Prince.”