This is the tale of how Adachi Mitsuru went from being an assistant artist on a weekly manga to the superstar manga-ka we know him to be today. But it’s told (and written by) Mitsuru’s older brother Tsutomu, who was also an assistant artist early on in their careers…

From MangaHelpers:

In a strange twist on Arthurian legend, young Art pulls the magical sword Excalibur out of a stone--only to find himself as one of a million Arthurs, fighting to defend the island of Britain from enemies and to earn the rank of the true king. Art is pretty puny, but his childhood friend Ligu (who was also chosen by an Excalibur) tries to keep him from being immediately killed.

Soon Art lives in a castle with knights, which are created beings who serve the kings. From the respect with which he treats the knights, he inspires some to hope he becomes the true king. But is that really achievable by a scrawny crybaby like him? [tethysdust]

A new transfer student, Tae Yeob, on his first day in an all-boys school (though it is enticingly close to an all-girls school), stutters through introducing himself. He's awkward at first, but the other boys' snickering stops when he says with sudden calm, "My hobby is fighting. My goal for the future is to become an MMA fighter. I plan on crushing all this school's fighters by next week."

After collecting information about the various personalities and fighting styles of the top fighters in the school, he's ready to make good on his word. Ssen Nom, The Strongest Fighter, is an earlier work of the manhwaga of the God of Highschool, and it shows its lineage in bruises and blood!

Slight retelling of the 2001-2002 Mazinkaiser OVA series. Included in this vokume is a short story called Mazin Kaiser: Shin Majin Densetsu (Mazin Kaiser: Legend of a New Demon God).

The story revolves around Nishimiya Shōko, a grade school student who has impaired hearing. She transfers into a new school, where she is bullied by her classmates, especially Ishida Shouya. It gets to the point where she transfers to another school and as a result, Shōya is ostracized and bullied himself, with no friends to speak of and no plans for the future. Years later, he sets himself on a path to redemption.

Note: Won the 19th Tezuka Osamu Cultural Award New Artist Prize in 2015 and the Ogaki City Cultural Alliance Award (Lifestyle Culture Division). Nominated for the category "Best U.S. Edition of International Material" in the 2016 Eisner Awards.

In ancient times, all of the demons recorded in the Classic of Mountains and Seas really existed. They absorbed humankind's thoughts to become more powerful. As time passed, people gradually forgot about their existence. The demons that were forgotten were all faced with the fate of disappearing...... there is a family that serves to guard and protect the only demon remaining in the world. As they painted and recorded, they were — the artists of the Classic of Mountains and Seas.

Li the God Killer, Wang the Devil Executor and Liu the Angel Slayer could never even dream about a reunion at Judgement Primary School. Can they turn the tide against the Demon God, Zhao the Heaven Fucker in Year 4, to change the cursed fate?

Based on the games of the same name, a variety of authors and artists write a large offering of short stories starring the various characters featured in the games. The stories range from being lovingly heartfelt, packed full of comedy and gags or being downright evil or messed up sometimes!

Note: These are NOT doujin. These are official comic anthologies licensed by Spike Chunsoft, the developers of the Danganronpa series.

4 koma anthology
ASHIHARA Daisuke
ASO Shuuichi
KAITO
KOMI Naoshi
KUBO Tite
NUMA Shun
ODA Eiichiro
SHIMABUKURO Mitsutoshi
SORACHI Hideaki
TABATA Yuuki

Keitarou Itsuki is a junior high school student unhappy about the menacing look of his eyes. Keitarou tries to confess to the girl he likes, Aoi Tokujira, but she rejects him flat out. Thinking that his eyes were the reason why she rejected him, he confides in his older sister about it at her salon, who helps by giving him a complete makeover...as a pretty girl! Forced to head home like this, he runs into Aoi in town, but she doesn't recognize him and thinks he's a somewhat manly girl. Before he can leave, Aoi asks him to help her overcome a problem she's had for many years: an intense fear of men.

In the near future, it is possible to instantaneously measure a person's mental state, personality, and the probability that a person will commit crimes with technology called the Dominator. Just thinking about a crime can make you guilty, and in this world there is no mercy for criminals.
Detectives work in pairs—one Enforcer and one Inspector—with Enforcers delivering lethal justice, and Inspectors making sure their partners don't take things too far. The story follows an Enforcer Shinya Kougami, who must solve and manage crimes in this dark future.

The protagonist Kairi, is a boy who works with the OIL stand. One day, when Kairi finishes his work, he encounters the girl called “Tia” who had a big sword. "Tia" had to search for her older brother, who is the owner of the sword.

A three-man team of Martian-based Coordinators led by Agnes Brahe commands the Acidalium. The trio gets involved in the second EA-ZAFT War as Agnes controls the Voiture Lumiere-based mobile suit known as the GSF-YAM01 Δ Astray.

In the world, there are some evil creatures known as "chousha" (the kanji read "Chou" = "Omen" and "Sha" = "person") that can only be killed by Cremators, people who use fire to incinerate them.

From VIZ:

Winning isn't everything in the game of basketball, but who wants to come in second? It takes dedication and discipline to be the best, and the Shohoku High hoops team wants to be just that. They have one last year to make their captain's dream of reaching the finals come true--will they do it? Takehiko Inoue's legendary beloved basketball manga is finally here and the tale of a lifetime is in your hands.

Hanamichi Sakuragi's got no game with girls—none at all! It doesn't help that he's known for throwing down at a moment's notice and always coming out on top. A hopeless bruiser, he's been rejected by 50 girls in a row! All that changes when he meets the girl of his dreams, Haruko, and she's actually not afraid of him! When she introduces him to the game of basketball, his life is changed forever...

Notes:
- Includes a oneshot called 10 Days After.

- In 1995 Slam Dunk received the 40th Shogakukan Manga Award for shounen.

Seikyou Private Academy, built on the intrigue of traditional occult myths, bears a dark past—for 60 years, it has been haunted by a ghost known as Yuuko, a young woman who mysteriously died in the basement of the old school building. With no memory of her life or death, Yuuko discreetly founds and heads the Paranormal Investigations Club in search of answers.

After a chance meeting leads Yuuko to cling to diligent freshman Teiichi Niiya, who can see the quirky ghost, they quickly grow close, and he decides to help her. Along with Kirie Kanoe, Yuuko's relative, and the oblivious second year Momoe Okonogi, they delve deep into the infamous Seven Mysteries of the storied school.

The 15th Hierarchical City of Torifune is best known as the Military Academy for the NOL. There, future librarians train and hone their skills for whatever challenges may await them outside. The story centers around Mai Natsume, a girl who had just arrived late due to a week absence, but there seems to be several phenomena centering around her that could be more than just coincidence.