Last Order: Hitoribocchi no Hyakunen Sensou (Light Novel) - Recommendations

• Vol: 6+; Ch: 57+
• 2019 - ?

A cosmic disaster changed the Earth forever, stripping away every last drop of color from the world. Mankind also changed: the familiar human face is almost forgotten in a world now populated wholly by mutants. Against the backdrop of a moody urban landscape, a lone wolf investigator named Avidia relies on both his wits and extraordinary gun to hunt down the world’s last hidden scraps of color. He soon crosses paths with a very special girl–one who just might hold the key to bringing back what the world has lost.

• Vol: 2
• 2018

Set in a near-future world where the boundary between human being and AI is vague, a rapid biological evolution, similar to "Cambrian Explosion," is caused by one incident. This incident turns into the genesis of a new jostle for supremacy, and the influence of the evolution goes beyond biological framework and spreads to various kinds of materials and technologies. The era of massive evolution involving diverse existences, such as human, machines and biotechnologies, is coming. Characters fight an existential war in such a world.

• Vol: 3
• 2018

The world is deep and wide place. In order to know more about it, the Sky State Central dispatched the investigators Yoki and Shuka to conduct investigations around, and they do so while being very passionate and loyal about their work. This is a story of Yoki who wants to know more about the world and Shuka who loves the world. A slightly mysterious story weaved by these two people traveling around the world, meeting people, and sometimes even solving mysteries. "It sounds like it's going to be an amazing story, isn't it, Yoki?" "I wonder about that. I don't mind as long as Shuka-senpai is working seriously."

• Vol: 1+; Ch: 4+
• 2021 - ?

• Vol: 9; Ch: 96
• 1997 - 2007

After a major natural disaster, earth is slowly transforming into a desert in which mankind tries to survive. Water becomes a precious resource and the center of political intrigues. In the middle of this, a young boy, member of a gang, encounters a beautiful girl who's a merciless warrior and holder of the key to the salvage of humanity.

• Vol: 4; Ch: 16
• 2021 - 2022

En has no prospects as a child of the slums—he ekes out a living by selling the scrap cyborg augmentations he scavenges to anyone who will buy. But when he's forced to go through some unethical experimentation, he transforms—making him eligible to become a fighter in the only thing that matters in this bleak world: The Rokudo Tournament!

• Vol: 5; Ch: 23
• 2013 - 2015

The series is set 150 years after humanity lost half of the planet due to a mysterious "black fog." To contain the "black fog," 3,000-meter-tall (about 10,000-feel-tall) walls were erected to split the world, and the half of the human population that survived now live in cities called "Arks." Shidou Enishi, one of the few Japanese survivors, runs a detective agency on the ninth ark. While pursuing a male suspect in a burglary, he learns of a massive conspiracy, one that may be tied to the Rivigarudo syndrome that is mutating its victims into something inhuman.

• Vol: 7; Ch: 29
• 2011 - 2014

The World Has Already Ended. The future--where a terrible battle against a parasitic virus called "Gastrea" has been fought...and lost. Humanity is cornered and lives in despair. Rentaro and Enju face constant danger in their work as a team of anti-Gastrea specialists known as "civil security officers." As if the daily fight against oblivion weren't enough, they'll soon face a threat that could destroy all of Tokyo...

• Vol: 1
• 2006

In the year 3567, the human race has lost their once technologically-advanced world due to their negligence with the planet. Now, their lives are in jeopardy when machines known as Gardeners are sent from the moon to destroy all mankind. Tokito Aizawa is a hunter who makes a living by destroying Gardeners and selling them for parts, but his life otherwise is fairly normal – until now. One day, while in town, Tokito meets a mysterious girl named Tea who calls him by the name "Koichi"; and in the midst of confusion, a large group of Gardeners suddenly attack the city. Tea then grants an unseen type of machine called "Silver" to Tokito – a machine that might be mankind’s best hope of evading destruction...

• Vol: 3
• 2010 - 2012

On January 3rd, 2097, a collision with a celestial object basically destroyed human civilization. Seventy years later, human survivors are still living in space, unable to return to their home planet. Some humans, called "Divers" are able to project an avatar to the earth in order to salvage information from earth-based computer networks.Suzuro is a 14-year-old freelance diver of incredible skill, but only a C-rank due to age restrictions. She works in a salvage ship with her pilot Ginga, who keeps the ship out of flying debris while she's connected to earth, and her assistant Shimugi. It's not only space debris colliding with the ship that could kill Suzuro while diving, there are also dangers waiting on earth that could kill her, just by interacting with her avatar. Suzuro must be certain that the cases she takes are worth the danger!