Most Popular Manga Of All Time (Best Selling)

10th grader Yugi spent most of his time alone playing games--until he solved the Millennium Puzzle, a mysterious Egyptian artifact! Possessed by the puzzle, Yugi becomes Yu-Gi-Oh, the King of Games, and challenges evil-doers to the Shadow Games--weird games with high stakes and high risks! These graphic novels contain new stories not seen in the anime, including the origin of Yugi and his friends!
(Source: Viz)

During a summer camp, 15 children, 8 males and 7 females, find a grotto by the sea. Deep within they discover working computers and some electronic equipment, and later the owner, a man called Kokopelli. Kokopelli claimed to be a programmer working on a brand new game, in which a large robot has to defend the Earth against fifteen alien invasions. He persuades the children to test the game and sign a contract. All but one of them signs, barely a moment later they mysteriously awaken on the shore believing what happened was just a dream.
(Source: ANN)
An extra story called Bokurano ~Mō Hitotsu no Bokurano~ (Yet Another Bokurano) will run in Ikki the issue after the end of the main story.

When Hana replaces her sister at an omiai (like a goukon, but for marriage) little does she expect to be insulted and called plain and flat-chested by the handsome and older Takane! Furious, she turns the tables on him by accepting the match instead of rejecting him. How will these two ever find love?

(Source: The Paper Dolls Project)

Asagiri Aya, a girl bullied at school and at home. One day, an eerie website, Mahou Shoujo Site, flashes on her computer screen and welcomes her to the Mahou Shoujo World.

(Source: MU)

In a world where everyone takes wonders like magic spells and dragons for granted, Coco is a girl with a simple dream: she wants to be a witch. But everybody knows magicians are born, not made, and Coco was not born with a gift for magic. Resigned to her un-magical life, Coco is about to give up on her dream to become a witch … until the day she meets Qifrey, a mysterious, traveling magician. After secretly seeing Qifrey perform magic in a way she’s never seen before, Coco soon learns what everybody “knows” might not be the truth, and discovers that her magical dream may not be as far away as it may seem …(Source: Kodansha Comics)

Yakuza Yashiro, who only ever loved Kageyama, meets a new bodyguard, Doumeki Chikara. Unfortunately, the latter is impotent.
(Source: MU)

Included one-shots:
Volume 1: Don't Stay Gold, Tadayoedo Shizumazu, Saredo Naki mo Sezu.

In this deeply moving first-person story, an introverted high school boy finds his classmate’s diary—and learns her biggest secret. Yamauchi Sakura is dying from a pancreatic disease and now he is the only one person outside her family to know the truth. The last thing the boy wants is to be her friend, but Sakura’s cheerful demeanor and their shared secret draw them together in this heartrending tale of friendship and mortality.

(Source: Seven Seas Entertainment)

Through a series of coincidences, his legendary avatar is sold for 3 billion 90 million won ($2.7 million), bringing great joy to him, only to plunge him into despair at losing almost all of it to vicious loan sharks. With revelation of money through gaming, he rises from the abyss with new found resolve and steps forward into the new age of games led by the first ever Virtual Reality MMORPG, Royal Road.

This is the legend of Lee Hyun on his path to becoming Emperor with only his family loving heart, his boundless desire for money, his unexpected mind, his diligently forged body and the talent of hard work backing him.

(Source: MU)

Maki-kun goes to look at the results of his high school entrance exam and meets a beautiful girl. Could this be a fated encounter? He's thrilled to find out that the same girl, Aikawa Kizuna, not only ends up going to his school, but is in his class. However, he's not so thrilled to find out that Aikawa is really a guy!

(Source: MU)

Mizuki who cannot readily open the heart to a person is going to turn over a new leaf from the high school to change oneself such. But after all I do not get along well... It is good-looking group of 4 that the rumor how at school to have met in such a case! Gradually knowing their true figure at the start though you were cautious...? Good-looking men and insane youth to send!

(Source: Summer Rain)

Junpei Takeda, a high school student, is childhood friends with Noriko Tatsumiya and the bully Kido Shouta. One day, during the usual course of bullying Junpei, they were suddenly summoned to a different world by the whim of "God". Summoned Heroes with cheats, or so he thought. But it turns out Junpei's stats were even worse than an average farmer. Tricked into a deathly labyrinth by the only one he trust, he walks the journey for revenge.

The Demon King led his army of demons to wipe out the human race. The Hero, Kail, and his allies attacked the Demon King's castle to defeat the Demon King. The Demon King is slain, but at what cost? Kail lost all of his allies throughout the war. Friends, family, lovers, comrades. All dead, and he is dying.

As Kail's life ebbs away in the Demon King's chamber, he notices a strange gem that the Demon King had coveted and approaches this relic to grab it; after an intense light glows, he is sent years into the past. After recovering from the initial shock, now in his younger body, he decides to avoid making the same mistakes of his first time through these years and to become stronger.

(Source: MU)

High school student Misumi Makoto is called into a fantasy world by the god Tsukuyomi, in order to be a hero. However, powerful others in this world aren't as thrilled to have him there, and they kick him to the edge of the world just as Tsukuyomi declares that he must leave Makoto to find his own way. Now it's up to Makoto to find his own way!

(Source: MangaHelpers)

Nino is a quiet outcast with only a bird for a friend. Kira is a popular boy with a big secret. Even though they live next to each other, they have never spoken. But when Nino learns Kira's secret, everything begins to change, and what starts as a hesitant friendship grows into something more... but how long can it last?

In this world, the concept of levels exist. Other than those who live off defeating monsters, most people are only around Level 1 to 5. What's more, not just anyone can go out to hunt monsters; it's heavily influenced by one's role anointed by god. There are eight such eligible roles. Warriors. Fighters. Clerics. Magicians. Rogues. Merchants. Hunters. Sorcerers. Those blessed with extraordinary power are divided into three types. Royalty. Heroes. Sages. But for the majority of the population, they have no such powers and live by farming or running shops. Towns are developed by those with the weakest role…Villagers.

For the powerless Villagers going out to hunt monsters is equivalent to committing suicide. But one day, a certain two-year-old child given the role of Villager notices something.

Once you defeat a monster… you can earn great wealth.

(Source: MAL)

Annoying! Cute! But Annoying!

The daily life of a quiet college student who just wants to left alone, being teased by his cute, stacked underclassman.

(Source: MangaDex)

A Kiss Note is a powerful notebook that makes anyone who has their name written together will instantly fall in love if they kiss each other regardless of any circumstances. This magical and very familiar item belongs to an angel named Guri whose job as cupid is to create couples. However, she accidentally writes down Aino Seiji, a regular high school student, and unless he kisses someone, Guri will die. She convinces Seiji to go kiss his crush, Hiyama Akane, the school’s popular girl who turns out has even stronger feelings for him, bordering on obsessive and psychotic. Eventually Akane and Seiji come together but not before Guri decides that she likes Seiji as well. What seems awesome to most guys becomes hell for Seiji who just wants a normal relationship with girls.

(Source: MangaHelpers)

Nozomu Itoshiki is depressed. Very depressed. He’s certifiably suicidal, but he’s also the beloved schoolteacher of a class of unique students, each charming in her own way: The stalker. The shut-in. The obsessive-compulsive. The girl who comes to class every day with strange bruises. And Kafuka, the most optimistic girl in the world, who knows that every cloud has a silver lining. For all of them, it’s a special time, when the right teacher can have a lasting positive effect on their lives. But is that teacher Itoshiki, a.k.a. Zetsubou-sensei, who just wants to find the perfect place to die?
(Source: Del Ray)