From Easy Going Scans:

In the near future, Mother Nature has decided to fight back against all human encroachment.

The world has entered your standard apocalyptic scenario that you can find in many forms of fiction, but it's right in the middle of the apocalypse actually happening, rather than in the aftermath. Vines and foliage entangle cities, as large wooden mech-like creatures called Arethusa (named after one of the mythical Greek Hesperides that tended the gardens in a remote corner of the world) rampage through cities.

Souma Shin, a punk kid out of Japan, went to visit his brother Ken, but all hell breaks loose as Shin finds a group of small kids being used for military purposes. He tries to save them in the confusion created by an Arethusa invading the compound...

From: Easy Going Scans

Everyone in his Yakuza gang looked up to him.

He was the boss's favorite pupil, but then in a single night, after he had won so many territorial fights for his gang, he lost everything! Why?

Minato is a total loser. He's failed to make it into college twice, he's unpopular with women, and he's unemployed. He seems like the classic-useless-shounen-harem-male-lead...
In truth, however he's actually an Ashikabi--one of a mysterious set of "masters" in an awesome battle royale between hordes of cute girls called "Sekirei."
Since this is an ecchi manga, with their attacks they often happen to... you guessed it--ripping each others' clothes off! Looks like his luck's taken a turn for the better.

From asdf scans:
In near future, mankind has been defeated by the viral parasites named "Gastrea." They have been exiled into a small territory and live in despair, side by side with terror. In this world trapped in darkness Rentaro, a boy living near Tokyo and a member of the "Civil Security"—an organization specializing in fighting against the Gastrea—is used to accomplishing dangerous tasks. His partner is Enju, a precocious young girl. They fight using their peculiar powers until one day, they receive a special assignment from the government. This top secret mission is to prevent the destruction of Tokyo. Set in a near future, this thrilling heroic-action story starts now.

Many different anthropomorphic predator and prey species are intermingling in a fantastical African savanna society! It is a strictly structured society with many rules, such as those governing when and where a predator is allowed to hunt their prey.

One lion, Leon, does not quite fit into the role nature has chosen for him. He doesn't grow his mane out, and, despite his physical strength, he shows no real interest in establishing territory and acquiring a harem of lionesses. But the most abnormal quirk of all is that Leon is a vegetarian lion!

His tiger companion (who has a bit of a crush on him), is firmly of the opinion that herbivores exist to be eaten, but she manages to mostly put up with his vegetarianism. One day, the two of them rescue a frightened gazelle, freshly arrived from the capital. The tiger is less than thrilled to have a pretty female food-animal hanging around with them, but the jackals who are tracking the gazelle seem to have some kind of business with Leon as well...

The resonating Echo of the sword changes the boy's fear into rage.

From Batoto:

Masumasu Academy, an Academic City floating in the Pacific, is home to children with mysterious powers known as "Fiction". "Fiction" grants them enhanced physical prowess, as well as one additional ability. What will happen when a time stopper, Kazuma, meets a cute girl with the ability to move at lightspeed, who knows and is searching for him?

When humanity was threatened 5 years ago, the boy who saved the world was driven to despair and became regarded as the enemy of all of mankind. And now a new crisis approaches humanity. The curtain rises on a gallant drama about a hero falsely charged.

A manga based on the dungeon crawler RPG videogame Etrian Odyssey 2.

An action fantasy manga that takes place in both this life and the next, featuring the boss of the guard tribe that protects the city, Jang Gwang Nam.

The continent of Yggdra is a place where humans, ogres, giants, forest sprites, and many more mythical creatures live. Led by the Holy King, the continent was at peace until one day, a mysterious group called the Black Army appeared and started conquering the land. In response, the Holy King and its troops fought against it, but Holy Capital fell and the Holy King was killed by the mysterious Black King. As the continent was in the glimpse of destruction, hope glimmered as one man, Yuri, the Hero, decided to fight back and formed the Volunteer Army to oppose the Black King and bring peace back to Yggdra.

The story is set in a dystopian near future where the Japan society is experiencing a crime rampage and in which a powerful and secret religious organization, with mysterious goals, is acting as an invisible hand behind the scenes.

The main character is their strongest assassin, lent to them by his fanatic mother when he was a child, and now a ruthless killing machine whose fists and feet cause serious damage to his adversaries, and whose weapon of choice is a special cutting wire with which he grabs and scorches his opponents.

He's a man hunter, whose childhood has been stolen and molded after his tormentors, but when the road of forgiveness is precluded to him what can be left to a man to obtain the redemption?

Takeo finds the answer in the vengeance, and in eradicating that same evil from which he has born.

So this dark and impressive badass guy, after betraying the sect, gets down to business kicking their ass and unleashing his fury against the deadly opponents sent to stop his unparalleled revenge.

In the corner of a certain town, there is a teashop where the master, Tsukasa, obtains and cares for plants from the depths of hell.

SERIES 5: Vento Aureo
Set in 2001 Italy, the story follows Giorno Giovanna, son of DIO, and his dream to rise within the Neapolitan mafia and defeat the boss of Passione, the most powerful and influential gang, in order to become a "Gang-Star" and make the world a better place. With the aid of a capo and his men, as well as his own resolve, Giorno sets out to fulfill his goal of absolving the mafia of its corruption.

Sihoon is a boy who lost his parents and lives with his older sister. This story begins as he meets Mephisto that came to the world to find Faust and makes a deal with Mephisto to supervise the fights between Mephistopheles and Faust.

Kageyama Shigeo (a.k.a. "Mob") is an 8th grader with psychic abilities. He could bend spoons and lift objects with his mind from a young age, but he slowly began to withhold from using his abilities in public due to the negative attention he kept receiving. Now, the only thing he wants is to become friends with a girl in his class, Tsubomi. With his psychic "mentor" (who has no psychic powers), he continues his daily life, attempting to realize his purpose in life.

Won the 62nd Shogakukan Manga Award for Shounen.

Alice Ryouhei will leave high school soon, but he's trying to avoid thinking about his future. Late one night, when he's hanging out with his tough friend Karube and his silly, girl-crazy friend Chota, they see fireworks. After one blindingly bright explosion, they find themselves waking up in a different world. In this 'Borderland,' people are forced to either participate in potentially deadly games or simply die. Will Chota, Karube, and Ryouhei be able to survive this dangerous new world, and is there a way they can get back to their original lives?

The world is split into two kinds of people: those on the "inside" of EDEN, and those on the "outside". Within EDEN there is clean air and water - it lived up to it's name of a true paradise. But EDEN cannot contain all of the people of the world. EDEN actually made conditions worse for those outside. Because of this, many resistance groups have been formed. Ricalna Forde is a soldier of the resistance team COSMOS, whose mission is to infiltrate EDEN's main headquarters and destroy the "Central CPU" - that controls all of EDEN.

Pu Reum Han led a normal high school life, that is until, he dreams of a lady, looking for his help to find her missing baby. But what if that baby is inside him?

Ichinose is a boy who all his life he was bullied, he has this ability to see ghosts and one day he meets a dog that is trying to tell him something, One day he meets Shiranui, Senka, who is a Ghost Child, a child who can see ghosts and fight them to purify them. Ichinose decides to help Shiranui out to fulfill her wish.