Atsushi Ando (15) moves back to his home town with his family after 6 years. The story focuses on the fortunes and misfortunes he encounters in this town mostly due to pranks pulled by the ghost of his older brother, Hitsushi Ando, AKA Q-Chan, whose death prompted the family to move away in the first place. The catch is, only Atsushi can see his brother's ghost.

"Save me!" Those were Sakurako Amamiya's last words to her friend Ageha Yoshina before she mysteriously went missing. Now Ageha's on a quest to find her. He's convinced that the mythical Psyren Secret Society has something to do with the recent rash of disappearances. And now he seems to be caught up as a player in their very deadly game...

Takaki loves ranking the popular and beautiful girls at his school. The one standing at the top is the foreign transfer student Emilia Shutrause, and being a student from Europe, she is extremely popular among the male students at Takaki’s high school. Although he was just a spectator of this school idol, that would change when one day he accidentally bumps into Emily (Emilia’s nickname) and he finds out her secret...

From Viz:
Ryoma Echizen just joined the Seishun Academy's tennis team, which is known for being one of the most competitive teams in Japan. Its members are incredibly talented, gifted, and athletic. With rigorous and extremely intense practices, the upperclassmen of the team expect the very best from themselves and they expect even more from the new members of the team. While most of the freshmen are on pins and needles hoping they won't get cut from the team, Ryoma Echizen is confident, cool, and collected. Some might even say he's cocky, but at least he's got the skills to back up his attitude. With his virtually unreturnable "twist serve," Ryoma is sure to make the starting team.
Join Ryoma and the other first years, as they train hard, make friends, and try to find a place for themselves on the team. And meet Ryoma's cute but chronically shy classmate Sakuno Ryuzaki. She's got a big crush on Ryoma, but will he ever notice her? Ryoma Echizen is the Prince of Tennis. He may be ready for the Seishun Academy tennis team, but are they ready for him?

One rainy night, Wada, a young teenage boy, standing near the edge of a bridge over a raging river - is on a depressing brink towards committing suicide. Suddenly, a beautiful blonde foreign girl, named Lisa, mysteriously appears. Who is this cheerful girl? And why is she dressed as a cheerleader? Wada wasn't interested and tries to ignore her, but Lisa kicks him off the bridge, and says "try flying." And to his surprise, he does. This power, where did it come from?

It seems that there is a war between the gods and demons. And by fate, the result of this war is tied to Wada. Upon learning this, Wada does not look very pleased. Was this his purpose - his destiny? What will he choose? Does he even have a choice? Afterall, Lisa, the goddess cheering him on, is surprisingly his classmate.

From HMR:

The main character, Rui, is a hardworking and happy girl. One day, her neighbor moves away and leaves behind a stuffed panda bear. Rui decided to take it home, since she's always loved panda bears. She goes to sleep with it one night, and discovers herself in bed with a stranger (who also happens to look like her ideal man) the next morning. He introduces himself as Peter, and that is how she ends up meeting three other guys...

Iroha, a masculine girl, and Hifumi, a feminine boy, are siblings who have transferred to a different middle school and moved to their grandparents house. However, after the first night, much to their surprise... they've switched genders. The two are left feeling "delighted"...

Danjou Yamato is a high-school student who lives in the countryside and is the boxing champion of the region. However, when his family has to move out to live in Tokyo, he is transfered to a school in Tokyo that was previously an all-girls school. Girls have a lot of power and give the guys a hard time. But Yamato will not bow down to the power of the girls, and on his way to claim power for the guys in the school, he finds out something about his past... something that he had forgotten long ago...

Weak, bullied, and pessimistic about life, that's Setsuna Kashiwagi. On the verge of jumping off a bridge, a mysterious man appears behind him and offers the contract "10 million yen in exchange for your life in a year." Skeptical at first, he accepts. Waking up the next morning, thinking it was just a dream, he notices 2 beautiful women sitting beside him. They are Kanna and Rena, Oni princesses here to claim his heart in a year.

Sequel of Beach Stars, the story begins where it stopped in the first one.
Nanase, who's now the representative of her prefecture, has finally joined the Madonna Cup and will do everything in her power to defeat her one and only target: Hayakawa Sanae!

STYLISH ACTION FROM THE AUTHOR OF ARCHLORD! The new English teacher, Chun-Woo, is not your ordinary teacher. Shioon, a victim of constant bullying, unexpectedly witnesses Chun-Woo's fighting power, and begs him to make him his disciple. Chun-Woo claims he can teach Shioon only if he is truly determined, and Shioon must jump off a bridge into a deep river in order to prove it! It turns out, however, that Chun-Woo and his powers are more than meets the eye. Shioon makes a grand entrance into the hidden world of martial arts, and he is about to be taught by the best there is! You can read part 2: The Breaker - New Waves here.

Manhwa you may like:
+ The Gamer - ​THE 게이머
+ Gosu 고수
+ Yongbi The Invincible 용비불패

Transfer student Manabizaki Kyou is a swot, a person who spends too much time studying. His dream is to attend Tokyo University and then work for NASA! He will soon discover, however, that the high school he's transferred into, which was once very prestigious, has taken in delinquents from the surrounding schools. Now it is full of violence and gang fights.
Luckily, Manabizaki has a surprising skill at fighting, particularly when he's defending the peace of his study area. Through this strength he'll find his new friends, a weak boy called Iwashida and a legendary delinquent girl, Hasuno Nene, who makes him feel things that, for the first time in his life, he can't explain...

A spin-off story focuses Kazuma Ikezawa (King Kazuma), Natsuki Shinohara's cousin, as he battles his way in the Oz Martial Art Competition.

The heroine of the story, Amu Hinamori, is a student at Seiyo Elementary. At first glance, her classmates refer to her as "cool and spicy" and rumors speculate about her personal life. However, her real personality is that of a very shy girl who has trouble showing her true personality. One night, Amu wishes for the courage to show her "would-be" self, and the next morning finds three brightly colored eggs—red, blue, and green—in her bed. At first, she is alarmed, but realizes she must have really wished to change. These eggs hatch into three Guardian Characters: Ran, Miki, and Su. The Guardian Characters aid Amu in discovering who she truly is and help fulfill Amu's dreams. Amu's life becomes much more complex as she struggles to deal with her "would-be" selves and the Seiyo Elementary's Guardians, who recruit Amu as the Joker to search for X Eggs and X Characters, the corrupted forms of peoples' dreams. Meanwhile, the Easter Company is extracting people's eggs in search of a special egg called the Embryo. The Embryo is believed to grant any wish to the one who possesses it. However, the process creates X Eggs and X Characters. Continues on "Shugo Chara! Encore!"

Mashiro was always alone, whether at high school, cram school, and home. Until one day, Mashiro met a youngster with a strange atmosphere. Holding the thought of “I want to change”, she took a big first step forward--even though her legs are small--seeking the path of Eden.

From FairGame:

"Live with Sincerity" is Natsuki Taiyou's motto. It's the first day of high school, Taiyou was heading to school and then he meets Hinata during the way there. He fell in love at first sight and suddenly confessed to her. Her answer was yes but then she ran away without saying who she was, but it turns out that she was his classmate. Taiyou felt a destiny between them. However, on the next day, she doesn't remember who he is. Why could that be...?

Contains 4 fantasy stories (2 plausibly tying into the main story), 1 story taking place after Harima announces he's a mangaka, and 5 stories occurring after the final chapter (with 2 being a part of the possible future)

In a modern country where the government is controlled by a Martial Shogun and samurai receive much respect, there lives fraternal twins of the Sakakido family. Kou, the brother, is very feminine, excels at cooking, cleaning, arts and crafts. Tsukiko, the sister, is masculine, loves fighting and is a combat genius. The twins learn about the Samurai High School, where men test their strength and women test their femininity, but the only way they can attend is by swapping places. If they are to be found cheating, they will be exiled so they have to overcome their gender differences and maintain their secret.

From Shoujomagic: Haruka is a sweet, innocent high school girl who is very excited to meet her new step-brother, Tsukasa. Since her father works overseas, Haruka has been living alone, but now that her father has remarried, she'll have little grade schooler Tsukasa with her while both their parents are out of the country. When they finally meet, Tsukasa is even cuter than Haruka had hoped! He wants to get her help with his homework and sleep in her bed...and undress her and make love to her!?

「 Don't Interfere with My Life!! 」

Handsome face and all around sportsman, also the young master of an enormous rich family...Chung-sol High school's No. 1 Han Sang-Ah!! This young master who doesn't lack anything ventures running away from home?! Officially permitted runaway time is 3 years! During this time there is something he says he must get in his hands...!! From then on starting to confront him are woman!! woman!! women!!!

Harem Flood Mixed with Comedy and Action! Explosion of Heart Fluttering Pink that would tail all Korea's Bookstores!!

(Source: volume one's backcover)