Sequel to Mahou Shoujo Lyrical Nanoha Innocent with Subaru and Teana as the main characters.

From MangaHelpers:

An alternate story of "Robotics Notes." In 2019, childhood friends Yashio Kaito and Senomiya Akiho are together in their high school's robotics club, but it is in danger of being abolished. Akiho wants to preserve the club, as she feels like it is her last link to her older sister, a roboticist. Akiho has only Kaito to rely on, but he's more interested in the game "Kill Ballad Online." It turns out, though, that Kaito's obsession with Kill Ballad may come in handy for their robotics club, and there are other allies they'll meet along the way! [tethysdust]

Japan is now the 51st state of the U.S.A..
The isle of Neon, located near Japan, is the only place where prostitution and gambling are legal. There, Italian Mafia, Chinese Triad and Yakuza fight each other to gain the control of casinos and brothels.

The "Time Loss Phenomenon," causes all living beings on Earth to be temporarily turned into statues. During Time Loss, only certain humans -- "Recievers" -- can remain active, and they witness the terrible reality of what's happening: otherworldly monsters are attempting to breach the human dimension.

First year middle school student Futaba Sorano and her friend are in the middle of a tennis match when all of a sudden a fish-like monster appears out of the sky. At the same time, everyone around Sorano turns into stone, and then are transformed into monsters. While being chased by these monsters, a mysterious boy named Riu appears, and explains that it is up to her, and the other "Receivers", to use their strange new powers to save the earth from these intruders. Sorano and her fellow Receivers' epic battle to save the earth has begun!

An expansion of the Strike Witches series, World Witches - Contrail of Witches details the short stories of various witches from areas of the European front of the Neuroi War.

Many Shonen Jump characters have big dreams, but this character's big dream is a nightmare! A very realistic reoccurring nightmare where a giant monster destroys a city. And it always ends with Ko, the poor dreamer, getting crushed under the rubble. But when Ko meets an unusual man who somehow knows about the monster in his dream, his nightmare takes on a whole new meaning.

Ryuuko Matoi is a girl who travels with a single red scissor blade, searching for the wielder of the other blade who killed her father. She arrives at Honouji Academy, a high school that lives in fear. It is ruled over by the fearsome student council, led by the student council president, Satsuki Kiryuuin, who use powerful uniforms to crush anyone in their path. After suffering a crushing defeat at the hands of Satsuki, Ryuuko comes accross a possessed school uniform named Senketsu, who puts himself on Ryuuko, granting her special abilities. Teaming up with Senketsu, Ryuuko stands up against Satsuki and the student council to liberate Honnouji Academy from their iron grip and find out the truth behind her father's murder.

The Planet Group is formed of powerful families that represent each planet in our solar system and the central Sun Family. Midori is the eldest son of the Earth Family, who is just now entering his high school life in the Planetary Academy. Other than his family name, however, Midori has little going for him. He doesn't get good grades and is shy and socially awkward.

His low self-esteem isn't helped by the general disdain his father and younger brother openly show towards him. All they want is for him to not further "dirty" the family name, by staying silent and not standing out in public. But at his new high school, Midori is surprised by the kindness of the other Planet children, particularly Yuudai Jupiter, who takes Midori under his wing on the first day. Will attending the Planetary Academy mark the beginning of a change in Midori's life, or is there no hope for him after all?

Original Webcomic

Even though this is a sequel to To Love-Ru, all of our main characters make an appearance along with some new additions. Rito continues to be caught in over the top uncensored ecchi scenarios. The alien Deviluke sisters still use their unique abilities to grab Rito's love confession. Nana and Momo have transferred into the school and meet Mea, who seems to be a worry free and joyful girl. Momo in particular wants to share Rito and create a harem for him. While scheming her plan, she confronts Golden Darkness also known as Yami. They are interrupted by possessed students who begin to fight with abnormal strength. Now the new plot line appears as a mysterious person who's in control of the students tests Yami's assassination skills. Who is this new enemy?

From Fallen Syndicate:

The Magane infection turns humans into "Magane," monsters of corrosive iron. The Magane prey on others by devouring or infecting them. They consume entire villages, leaving no survivors of their destruction... until Alma and his group of friends appear. They possess powers far above those of a normal human: the power to kill the Magane. Alma and company save the young Tenkou from infection, and he soon becomes their guide to the legendary "Agartha of Shintetsu."

Outer space, the far future.

A lone seed ship, the Sidonia, plies the void, ten centuries since the obliteration of the solar system. The massive, nearly indestructible, yet barely sentient alien life forms that destroyed humanity’s home world continue to pose an existential threat.

Nagate Tanikaze has only known life in the vessel’s bowels deep below the sparkling strata where humans have achieved photosynthesis and new genders. Not long after he emerges from the Underground, however, the youth is bequeathed a treasured legacy by the spaceship’s coolheaded female captain.

Note: Won the Kodansha Manga Award for general manga in 2015. Won the Seiun Award for Best Comic in 2016.

A sitcom about an ordinary man and his alien wife.

One day while walking home from school, he finds that someone has messed with his trash. His trash has been left behind because the different types of trash were mixed up. The perpetrator kept mixing up only Souya trash everyday, so one day Souya decides to lie and wait to catch this annoying criminal. That day, he finds that the perpetrator was actually the recently transferred classmate, Tokisaka Koyomi, and she reveals that she has come from the future to stop all environmentally friendly activity. Now, Souya and Tokisaka will have to live together and destroy the environment so that Tokisaka can go back to the future. [DrCoke]

From Tokyopop: Unfulfilled love always ends tragically… or does it? Through different seasons and different eras in time, two lovers cross paths again and again, trying for that one chance to get it right. Different lives, at different points in history, but one thing remains constant—their love for each other. Spanning the beginning of history, WWII-era Japan, modern-day America, and the far distant future, these love stories remind us that love truly has no boundaries.

The year is 2061, when space travel is now possible and commercially viable, and the students of Caird High School embark on their Planet Camp.
But soon after Group B5 arrived at their planetary camp site, a mysterious and unforeseen sentient light sphere warps its 9 members into outer space, stranding them 5012 light years away from their home planet.
With the discovery of an old, unmanned spaceship nearby, the students must stay strong, manage their limited resources and remain united in the darkness of space, so that all of them can survive their long and likely perilous trek back home aboard the Astra.

Long ago, the Emperor possessed great mystical powers... and now, a young boy wonders: will he have them as well. With no memories, and only a rose-shaped scar on his forehead as a clue, he ponders his legacy while on the run with the girl who rescued him from a group of armed warriors. She takes him to a scientist who seems sure Rose is the Emperor's clone, and that this young boy must assume the mantle of leadership. But opposing forces have created another clone from the Emperor's DNA... and the struggle for power begins.