Origin: Spirits of the Past - Recommendations

• Vol: 7+; Ch: 70+
• 2020 - ?

Natural plants have all but withered, leading to low levels of oxygen everywhere. However, humans have developed a technique to transform people into plants to produce a small amount of oxygen that allows mankind to keep surviving. In this world, everyone must decide: Will they live as humans in a bleak and uncertain world, or abandon their anguish to embrace a new life as plants?

• Vol: 20; Ch: 260
• 1990 - 1995

In the future, humanity has destroyed the world’s plant and animal life out of greed and consumption. Meat is biologically created from animal cells to eat, and little remains of what used to be the environment. However, when a mutated, engineered chicken breast morphs into a sentient, vengeful being and human children begin to be born with green hair and spots, it becomes clear that mankind’s fate is anything but secure…

• Vol: 26; Ch: 226
• 2008 - 2016

In the year 2016, a catastrophic incident at the Odaiba nuclear power plant contaminated the city with radiation and turned Tokyo into a ghost town devoid of life. 20 years later, Japan still struggles with the environmental consequences of that fateful day, and actively looks for survivors using Coppelions: genetically-engineered, radiation-resistant girls who scour the streets when SOS calls occur. With military support and funding to back them up, these young ladies continue to explore Tokyo and discover just who, and what, managed to survive.

• Vol: 1; Ch: 8
• 2015

The forests are in danger! Tina and Tai stumble upon a space pod that has crash-landed onto earth! Befriended by two space aliens, they are unwittingly dragged along on a recovery mission that takes them deep into the forests around the world. However, the kids soon discover that the forests are disappearing! What is going on?! Can they learn the science behind the forests' disappearance and do something before it’s too late?!

• One Shot
• 2004

A computer continues to exist in order to complete a mission to preserve life in an extinct world. This is a record of its heroic 27 million year struggle.

• Ch: 3
• 2019

A young girl named Pochi is forced to kill others in order to survive. She lives on a planet where resources are scarce, and food and money can only be bought by taking the lives of others. One day, she comes across a mysterious plant. It changes her.

• Vol: 1; Ch: 5
• 2006 - 2008

By the mid 23rd century, the foolish decisions of mankind have led to the collapse of Earth's environment; humanity and all life on Earth are extinct. In the hopes of someday restoring the world to what it used to be, man, before being wiped off the face of the planet, built an immense tower. Inside lives Louis, a supercomputer charged with keeping the DNA of all living things safe until a time comes for it to be released and restored. This is his story - a story that spans millions of years and beyond.

• Vol: 1; Ch: 4
• 1985 - 1986

In the early part of the 21st century, clouds of toxic microbes cover most of the planet, forcing the citizens of Newport to wear masks when outside. In this harsh world, a single criminal's malicious deeds have incited the Japanese police to take to the street in Tanks! Having already stolen the experimental organism Greenpeace Crolis, Buaku and his henchmen Annapuma and Unipuma set their sights on bigger game including a prototype mega-tank and the governments only sand-crawler submarine. Join Leona Ozaki, Alcuad Solte, Charles Brenten, and the rest of the Newport Station Tank Police as they try to uncover the method behind the gangster's madness and catch him before his diabolical plan comes to fruition.

• Vol: 5; Ch: 23
• 1985 - 1987

In the year 2999, only eleven cities still survive on Earth. The climate has changed drastically, and a biochemical apocalypse has made women extinct. For centuries, the male population of Earth has survived by depending on only one woman, called the Holy Mother, whose ova are harvested to create genetically engineered children. By now, any concept of a world in which women exist as ordinary people is long gone. Society has re-structured itself around all-male families, and relationships between men and adolescent boys have become the norm. At the beginning of Marginal, the Holy Mother is assassinated by a terrorist known as Grinja. The government in power doesn't want to start a mass panic, so it pretends that the Holy Mother has only shed her vessel, and that she will be miraculously "reborn" in the near future. The public, which is superstitious and devout, believes this easily. Only government officials know that behind the scenes, there is a frantic effort to create a being able to give birth. The manga's story revolves around Kira, who becomes involved in a three-way relationship with Grinja, and Ashijin, a young man who calls himself Kira's owner. 

• Vol: 8; Ch: 41
• 2010 - 2014

At the end of the 21st century, humans have made great advancements in technology and were able to create a giant energy source to power that technology. However, this new source of energy overloaded and turned into a more devastating force than nuclear weapons. The catastrophe wiped out the majority of human civilization and those who survived lived in terror of the anarchy that took over. Hagakure Kakugo comes from a secret family that has protected people for generations from powerful organizations and evil from taking over. They are only awoken in time of need and it has been decades since Kakugo was conscious. His body had been heavily modified by fusing it with metals to enhance both his offense and defense. He uses an armor called the Exoskull that attaches to him to greatly boost his already superhuman power. Thus begins a story about a young man and his armor’s journey through hell.