By day, highschool girl Aikawa Maki is a normal girl who has fun with her classmates Yuu, Michiru, Renge and Mina. By night however, where streetfights take place, she becomes an unrivaled lethal air-borne attacks user with a succession of victories: Airmaster. Various strong people, fascinated by this girl's strength, will come to challenge her in battle...this vivid street-fighting comic starts here!!!

From Viz:

Nobody enjoys a good fight more than "Kiibo" Miyazawa, a high-school student whose father is training him in the family's secret martial art. Kiibo dreams of becoming the next Bruce Lee, but his awesome fighting skills may soon surpass his idol's!

Bira is a kid who loves fishing, living and wandering in the wilderness with his dwarf grandfather. One day, his grandfather tells Bira to wait for him at the Northern part of the forest and disappears. Bira waits for many years living in forest while befriending a family of bears and staying away from humans, just as his grandfather had warned him to do. By chance he meets and saves Tanyu's life and later becomes friends with him. Upon hearing his friend going on a dangerous mission, Bira leaves the forest for the world outside to save his Tanyu.

1000s of years of history lies dormant in the hidden world of martial arts. Yet the struggles have never ceased and the masters emerge and fight on, now with a high school as its battleground.

One day, the colossal tower, "Babel" suddenly appeared in the city of Tokyo. High school student Taiga holds a belief of, "Not standing out is the best." While he dreams of chasing after his sister from the self-defense forces who went missing inside Babel, his daily life still continues to be boring, and the same as usual.
However, on one certain day, the "time to fight" finally confronts Taiga! Young man, fight and survive in the tower! Grasp it! A new era filled with a battle of "superpowers" and an "unprecedented" tale of survival, begins now!

Shota meets loli with wings, the conservative society don't approve of this... and now they are in trouble!

Our protagonist was reincarnated into a world with goblins and dragons....but his optimal job is "villager". Using the cheat "getting one chance to redo life after death" he will show you what a villager can do.

Shy and introverted, Kageko Tadokoro passes her free time in class drawing instead of hanging out with her classmates. But even when her classmates approach her, it’s only to make fun of her drawings and appearance. In stark contrast, Nikaido is well-liked among her peers as she has both beauty and smarts. And while everyone makes fun of Tadokoro, Sakurako Nikaido on the other hand, is totally infatuated with her. Just one look at one of Tadokoro’s drawings and Nikaido fell in love with the art and eventually, the artist herself. When Tadokoro offers to draw Nikaido a portrait, Nikaido becomes ecstatic as this may be her chance to get closer with the girl she has been obsessing over.

- Author's Pixiv: https://www.pixiv.net/member.php?id=479833
- Author's Twitter: https://twitter.com/TATSUBONi
- Official English on Amazon: https://www.amazon.com/gp/product/B088NNJ9LB

In the aftermath of a great war between humanity and creatures known as the Talaiv, the storms of war are brewing again.

Seigi, a martial arts trained middle schooler, often feels driven to protect the weaker people around him. One day, he defends a homeless man against some punks, and the man gives him a strange tattoo on his palm in return. The tattoo is a secret weapon produced in the arms race between America and the Serinistan Kingdom.
Seigi finds himself in over his head when a powerful girl, using the same secret weapon, violently pursues him in order to retrieve it. His skill at martial arts may not be enough to keep him alive, but will he be able to learn how to trigger the power of his tattoo in time?

Batoto: This is the story of a mangaka, a killer maid, and body swapping ramen, with a side of gratuitous violence and explosions.

Abel, a boy abandoned by his family because of the fear his unparalleled talent for magic evoked on them, was taken to an orphanage and taught magic by a former great magician.
Eventually, his ability far surpassed that of his teacher and after receiving an invitation from the magical society known as Chaos Raid he embarks on a journey with the fire hero, Maria and the water hero Daytona and later, the ash hero, Cain.
This is the story of Abel's childhood and adolescence before his reincarnation.

Yataro Sarumaru, nicknamed Saru, is an ace in the locksmith trade and is obsessed with girls. This (almost) average teenager is given a hardly ordinary mission which marks the beginning of his adventures!

Before you ask, it’s not an isekai.

Anyway, the MC is an ordinary peasant who becomes an adventurer after his sister gets cursed by a witch and he needs to find a cure. But the twist this time is that he only knows the skill of [Breathing]. Like, regular breathing.

Anyway, how will our hero fare in the endless dungeon, using only breathing techniques to push through, aided by his busty childhood friend who has no romantic interest in him?

Look, this is from the same author of that series where a Playboy becomes a Sage and gets two shortstacks to join his party. You know he’s going to find a way to make breathing overpowered, and you know he’s going to have a harem. Why are you even reading this synopsis if you already know it’s going to be one of THOSE stories? Why have you already added it to your follow list when you could read anything and receive a better value? Why are there thousands of delicious and nutritious foods around and you keep eating the dirty quarter pounders right outside the McDonalds dumpster?

From Manga Reborn:
Welcome to the 82nd Precinct, also known as the Crocodile Precinct, which is filled with cops that never let go once they sink their teeth into something.
Leading them is Hino Mika, a female cop who's as dangerous as she is beautiful. Follow her on her adventures in this sexy action suspense series.

A dramatization of the real life of Yaeko Yamamoto. Over 100 years ago, Yaeko broke traditional Japanese stereotypes, gender, and honor to become a gun-warrior in defense of her homeland of Aizu.

From DrCoke at MangaHelpers:
Boy meets girl, but in this case, the girl is part of a family specializing in fighting evil spirits. Kamishiro Renge battles evil spirits with the help of her assistant cat Tama. The boy is... just a boy. Yuta fell in love with Renge the moment he met her, but will he be able to keep up with her profession? Will she be able to lead a normal life with Yuta?

A couple of decades have passed since Ultraman last was seen in Tokyo, and his kaiju nemeses seem to have gone back into outer space. Former Ultraman Shin Hayata has forgotten that he ever wore the metal suit, though as Minister of Defense he still takes a keen interest in protecting Japan. His young son Shinjiro knows that his dad once worked with the SSSP (Science Special Search Party), but not that that explains how he came to have amazing strength and other seemingly supernatural abilities; as a moody teen he just thinks they make him weird. But then one day a dangerous alien comes back to Earth, and everything starts to become clear. Will Shinjiro don the suit and become the new Ultraman?

A mecha otaku is reincarnated into another world as Ernesti Echevalier (Eru). In this world, exist huge humanoid weapon known as Silhouette Knight. Dreaming of piloting those robots, Eru, with childhood friends, Archid and Adeltrud Olter: together they will aim to become Knight Runner, pilot of Silhoutte Knight.

Bonus stories following the convicts featured in Baki's death row inmates arc after the events of Baki's second manga. Released in the "Baki" series' 2018 shinsouban as mutual promotion with the anime.