A manga about tough guys and hackers? The classic combo! Let's see how this unlikely team came together!

Tsubaki is her school's most proficient student, is polite, and is absolutely good at everything, and little by little, people are hailing her to be the school's queen.... And she absolutely despises that. She quietly admits to herself that being a "perfect student" is not her real personality, but a clever ruse to become a more likable person.

She is, however, still not able to interact normally with students and thus is dissatisfied--a fact that prompts her to follow the advice of a magazine on finding happiness: the magazine states that by meeting your doppelganger, you will achieve long-lasting happiness. Determined, Tsubaki follows the instructions in the magazine and opens up the "door" that will allow her to meet her doppelganger....

...And the one she meets at the other side, "the other world" is not who she was expecting.... Well, it is someone who is strangely identical to her when it comes down to it, but it is also essentially different.

I have never seen such a cool girl!!
Daria (♂) is scrawny and has an appearance complex. One day he passes by Rubi-san (♀) who looks cool and is muscular!
“Muscle Girl” x “Tsundere Boy”. The muscular love comedy begins!

From Tokyopop:
Dabin Choi is the daughter of Seoul's most powerful crime boss, and daddy's little girl has the hots for Eugene, the son of one of her father's 'friends'.
There's just one problem: Eugene isn't into Dabin. In fact, he thinks of her more like a little sister. (The kiss of death!) To make matters worse, Dabin's new classmate is none other than the son of her father's long-time rival. Soon, everyone at school begins playing power games that would make their fathers proud!

One night an android which looked like a cat (a Necossass: Six type) suddenly appears in Katsuhiko Katsu's room. The android said that she comes from the 22nd century and that Katsu had left a note in a time capsule stating that he wanted to live with a robot-cat.

A girl follows the tradition of her family by testing to be a demon cleaner. During her test a vampire escapes and bites her. In order to reverse the effects of the bite her older brother and said vampire have to go on a demon cleaning job together.

Kaju is a normal boy. But his life changes when he is reanimated by a necromancer who wants to conquer Japan. Whatever will happen next...

A beautiful fantasy love story between an undead hero and a great saint... which starts with a death flag on the first page.

From Easy Going Scans:

Look for him in the boulevard full of sorrow and desires called Slum Street and you shall find yourself at the place of the Necromancer. He has the power and knowledge to resurrect all your loved ones—at the price of your soul or years of your life. Oh! There is one caveat... But no one willing to part with life or soul would listen to such warnings, anyway.

Make a contract with him and you’ll be swept away by a tale of life and death.

Necromancers have built a name for themselves as fearsome practitioners of magic capable of dropping entire empires to their knees. Simon Follentia is a necromancer with incredible latent talent! After being scouted for the necromancer's academy, this genius is ready to be nurtured and taken to the next level. But could Simon's insane talents attract some unforeseen consequences?

Makoto Kaneshiro, a former member of the Special Forces, had been spending his days engrossed in video games while struggling to find his place back into society.

Suddenly, he receives an unexpected phone call. "Makoto Kaneshiro, is that you?" The caller possesses detailed knowledge of Makoto's personal information and gaming habits.

Caught off guard, Makoto attempts to shut down his computer, but… to his dismay, he discovers the same situation repeating itself, again and again.

Death is usually the end, but for Erik, it’s just the beginning. Though he can’t remember anything before he died, he remembers that he wants revenge and a reason why he was killed. Together with Moll, the mysterious girl who brought him back, the two embark on a journey to find out who they are and what circumstances put them in their current predicament.

High school freshman Hirano Haruto moved into the dormitory of the school he wanted to go. Morioka Touji, Haruto's guidance manager, has a "black" rumor going on in the school and he didn't fulfil his job to guide Haruto. However, Haruto finds that Morioka actually isn't as bad as everyone thinks he is...?

Three boys are desperately struggling to "make" a girlfriend in their sad adolescent lives. They then realize that their classmate, Ghang Han-Gyul - the manly, serious, quiet person of their class - has been secretly going out with a beauty for 100 days*. This triggers the friendship between the manly, serious Han-Gyul and the three dateless losers. *A 100 day celebration of a relationship is seen as very significant.

The year is 2130. After the third world war, large contaminated areas known as "Blackspots" formed all over Japan. Large Walls were used to quarantine off these "Blackspots". In time, signs of inhabitance appeared within these wastelands. Among the survivors who had been abandoned inside the Blackspots, labeled as "those who were unneeded", came forth possessors of uncanny abilities -- Fire, wind, brute strength... they were defined by their supernatural abilities. Others, fearful of their powers, expelled them and named them - Needless.

Prequel and side stories from the main story of Needless Manga. Volume 1 also contains prototype one-shot "NEEDLESS 1.5".

Niito Nemuko, nicknamed Neeko, is 23 years old and still unable to find a job. This is her everyday life as she struggles with the fact that she's basically just a NEET.

The NEET Yamano Masaru (23 y/o) went to Hello Work and finds an interesting job offer. [A test play of the Miniature Garden "Razgrad World." Extended period of time, preferred to be able to live on site. Monthly salary of 250,000 + commission.] Immediately goes to the interview and signs a contract. However, the place of employment is another world. Because of the contract he's taken there, to survive Masaru received a cheat, but he is told the shocking truth. "This world will be destroyed in 20 years." Can a simple NEET prevent the destruction of the world?!

Oneshot manga with six short tales of fantasy and friendship by Shimizu Aki.

1) The NEET Woman and the Second Grader
A 19-year-old NEET and near-hikikomori named Tsuda Yasue encounters a crying second grade girl outside her apartment and tries to figure out how to handle her.

2) Flow My Tears, the Onion Said
A girl suddenly is spoken to by an onion she is preparing to cook.

3) The Young Lady and the Gardener
A young, wealthy lady who lost her sight after her father died sits at her window and makes grandiose requests while a gardener that works outside her window tries to fulfill them.

4) The Ouroboros-drome
An Alice-in-Wonderland like tale.

5) The Secret of the Pair
Two history fangirls meet, and one of them reveals a secret that leads to the other playing out a very familiar situation.

6) Advice on Love
A five-years-later continuation of the NEET Woman and the Second Grader.