From ANN:

Guts, known as the Black Swordsman, seeks sanctuary from the demonic forces attracted to him and his woman because of a demonic mark on their necks, and also vengeance against the man who branded him as an unholy sacrifice. Aided only by his titanic strength gained from a harsh childhood lived with mercenaries, a gigantic sword, and an iron prosthetic left hand, Guts must struggle against his bleak destiny, all the while fighting with a rage that might strip him of his humanity.

Warning: This manga is for mature audiences only, since it has sexual content and graphic violence (gore, blood, rape, etc). Definitely not for the weak hearted.

The 1988 Prototype chapter won a prize at the Comi Manga School Miura attended and the main series won the Tezuka Osamu Award for Excellence in 2002.

The workplace comedy's story follows a 26-year-old office worker named Momose. He recently changed jobs after his previous boss harassed him. He's worried his new boss will also use power harassment to make his life miserable. Momose is trying to hide his anxious stomach when he first meets his new boss Shirasaki, however he's surprised to find his new boss is such a natural airhead that he eliminates all of Momose's anxiety.

The series, set in Saitama, follows the story of Ren Mihashi. Mihashi was the previous ace pitcher in his middle school's baseball team, but it seems that he only got the position because his grandfather was the owner of the school. His teammates (especially the team's catcher, Hatake) hated him, and they always lost their games. Mihashi is thoroughly convinced that he is a lousy baseball pitcher, and feels guilty because he believes that he is responsible for all the losses. Mihashi graduates through middle school with extremely low self-esteem. But in truth Mihashi is really a hardworking and skillful pitcher, and the main reason why his team always lost all the games is because of bad cooperation, because his teammates never talked about the game with him, and they did not try to come up with a plan or strategy to fight against their rivals. Mihashi then transfers to Nishiura High School with plans of quitting baseball because he thinks he is not good enough to succeed at it, though he still loves the game deeply. However, he is dragged into Nishiura's baseball team by their coach, Momoe, while watching the team training outside the field. Assisted by his new teammates (and especially the catcher, Takaya Abe), he grows in stature, confidence and skill, helping his team excel with his own abilities.

Won the Kodansha Manga Award for general manga in 2007. Won the Creative Award at 10th Tezuka Osamu Cultural Prize in 2006.

Winner of LINE Manga Award: I don't have the normal kind of communication problem! If it's kids, I can get along with them just fine - my communication problems are limited! Nashikawa, a high school student with this kind of troublesome disposition, enters a "Volunteering Club", in which he watches kids!? Will Nashikawa be able to overcome his communication problems while being surrounded by quirky club members and little kids!?

Set in Central Asia in a rural town near the Caspian Sea during the 19th century, the story revolves around a young woman, Amir, who arrives from a distant village across the mountains to marry Karluk, a boy eight years her junior. The story unfolds among details of everyday family and community life. However, the peaceful atmosphere is disturbed when Amir's family demands to take her back to their village.

Note: Nominated for the 4th and 6th Manga Taisho. Won the 7th annual Manga Taishou Award in 2014 and the intergénérations prize at the Angoulême International Comics Festival in 2012.

The literature industry is suffering from the publishing recession. While the literary magazine 'Mokuren' was grieving over the present state of affairs, a composition intended for their Newcomer's Award was sent to their editing department. However, it completely ignored the application rules. It should have been torn to shreds, but the work caught the eye of a sole editor. As a result, the world began to change.

As a child, Thorfinn sat at the feet of the great Leif Ericson and thrilled to wild tales of a land far to the west. But his youthful fantasies were shattered by a mercenary raid. Raised by the Vikings who murdered his family, Thorfinn became a terrifying warrior, forever seeking to kill the band's leader, Askeladd, and avenge his father. Sustaining Thorfinn through his ordeal are his pride in his family and his dreams of a fertile westward land, a land without war or slavery... the land Leif called Vinland.

Note: Was nominated for the 2008 Manga Taisho award. Won the Grand Prize in the manga division of the Japan Media Arts awards in 2009. Won the 36th Kodansha Manga Award for Best General Manga in 2012.

On a daring quest to save a life, two friends are hurled into another world, where an evil sorceress seeks to enslave them. But then the lion Aslan's song weaves itself into the fabric of a new land, a land that will be known as Narnia. And in Narnia, all things are possible.

Otaku Sakamichi Onoda has just entered high school and plans to join the anime club. In middle school, Onoda didn’t have any friends with whom he could talk about anime, games, Akihabara and other otaku things, and he is hoping he can make such friends in the anime club, but he finds out it's been disbanded. In order to reestablish the club he tries to find four other people who would like to join.
Since he was a little boy, Onoda has ridden his mamachari–a bulky bicycle with a step-through frame mainly used for short rides, such as for casual fun or to pick up groceries–to go to Akihabara every week to check out or buy otaku things. Fellow freshman Shunsuke Imaizumi and bicyclist, while training, notices a boy (Onoda) riding his mamachari up a steep road.
Freshman and road racing cyclist, Shokichi Naruko visits Akihabara to get some Gundam plastic models for his younger brothers and meets Onoda who catches his attention because of his cycling skill on the mamachari and later find out they go to the same school. Later on both Naruko and Imaizumi try to convince him to join the bicycle racing club but will he?

Won the Kodansha Manga Award for Shounen in 2015 (tied with Nanatsu no Taizai).

Seinen sports series, serialized on Big Comic Spirits. Nominated for the 2017 Manga Taisho Award.

From Tokyopop:
Sergeant Keroro is the Captain of the Space Invasion Forces Special Advance Team of the 58th Planet of the Gamma Storm Cloud System, sent to the planet Pokopen (aka Earth) to collect intelligence for his planet's invasion force. He is also a frog. After his ship crash-lands in the planet earth, he takes shelter in the Hinata household, but the two kids, Fuyuki and Natsume, find him and take away his alien weapons. When his people discover that the Pokopenians are aware of him, Keroro is abandoned - left to fend for himself in this hostile world. But he's not alone - four other pre-invasion agents were are also lurking on Earth.

Note: Won the 50th Shogakukan Manga Award for children's manga in 2005.

Ajiyoshi Yoichi is a culinary prodigy who manages the eating house together with his mother. One day, Murata Genjiro appears in the eating house and is surprised at the delicious taste and delicate culinary skills of the katsu-don prepared by Youichi. Subsequently, Youichi is being invited to the Aji-oh Building in which he is involved in a spaghetti match with the in-house Italian chef, Marui. Youichi's novel culinary ideas, coupled with his enthusiasm of serving the best for his guests, allow him to defeat Marui in the match. From then on, Youichi begins to compete with other rivals in the race for the best tastes and dishes.

Won the 12th Kodansha Manga Award for shounen in 1988.

-from Baka-Updates: A manga that revolves around an old-fashioned all-night food stall, the various dishes that the stall owner prepares to suit the tastes of different customers, and the joys, griefs, trials and tribulations of his faithful patrons. Nominated for the 2nd Manga Taisho Award (2009). Won the 39th Japan Cartoonist Awards Grand Prize (2010).

In 205X, armed forces and conflicts are a thing of the past and people live safe, peaceful lives, all thanks to a cheap, inexhaustible source of energy.

One day, something strange is discovered on the moon: an ancient corpse in a spacesuit. The corpse is undeniably human, but it appears to be about 50,000 years old! What does this mean about the history of our species? What effect will this discovery have on current human society?

This manga won a Seiun Award for Best Comic of the Year in 2013.

As an UNLUCKY girl prepares to face her death, an UNDEAD who desperately wants to die appears before her! Vicious, violent and buck naked! An unprecedented picaresque hero appears in Shonen Jump!

Won the 2020 Tsugimanga award.

Komi-san is the beautiful and admirable girl that no one can take their eyes off of. Almost the whole school sees her as the cold beauty that's out of their league, but Tadano Hitohito knows the truth: she's just really bad at communicating with others.
Komi-san, who wishes to fix this bad habit of hers, tries to improve herself with the help of Tadano-kun.

Note: In 2022, the manga won the 67th Shogakukan Manga Award for the shounen category.

Within the winding streets of Kyoto's geisha district, there lives a 16 year old girl named Kiyo. After failing to become a Maiko, an apprentice traditional Japanese performer, Kiyo works as the caterer for her troupe. This is the story of her daily life.

Won the 65th Shogakukan Manga Awards in the shounen category.

In Giant Killing a ragtag bunch from East Tokyo are struggling in Japan's top football league. The team is going through an abysmal spell right now where they are nearing the bottom of the table and have lost 5 matches in a row. The losses haven't done much to team morale, because it was already low. Fan support, on the other hand, is looking bleak. In the world of football, once the fans turn on a team the end is near. Teams don't recover. Coaches are fired, players are sold, and teams drop to lower divisions where profits often prevent them from ever being successful against even mediocre top division teams. East Tokyo United, ETU, can only blame their coach right now. And Coach is ready to give up this next game to prove to his team and fans, that against the biggest club in the nation he can make this team win.

Note: Won the 34th Annual Kodansha Manga Award (2010) in the General category.

With its long-awaited freshman/student athletes aboard, Mizuho High's basketball team practices with a hope to play in the national tournaments. In the prefectural preliminary games, the young athletes compete with their rivals at Shonandai-Sagami, Honmoku-Higashi and Yokohama Gakuen Highs. Will Mizuho compete in the national tournaments and once again confront Narita-Chuo and Meiwadai-Hitachi Highs? And finally how will the players fare in a game against the high school basketball champion team at Tendoji? The struggles of the newly reborn Mizuho basketball team to become the national champion begin!

Won the 31st Kodansha Manga Award for shounen in 2007 (shared with Sayonara Zetsubou-Sensei).

Yotsuba is a strange little girl with a big personality. Even in the most trivial, unremarkable encounters, Yotsuba’s curiosity and enthusiasm quickly turn the everyday into the extraordinary! Join Yotsuba’s adventures as she explores the wonders of the world around her.

Note: Won an Excellence Award for Manga at the 2006 Japan Media Arts Festival. Was nominated in 2008 for the 12th Osamu Tezuka Culture Award, the Eisner Award "Best Publication for Kids" category and was runner-up for the first annual Manga Taishō award in 2008. Was nominated for the 20th Tezuka Osamu Cultural Prize in 2016.