Manga with Sci-Fi genre:

Amasawa-kun and Kamuna-chan

One day while taking a walk, Amasawa-kun meets the Kamui Artificial Human Number 7 (Kamuna-chan), who happened to fall on the side of the road. Amasawa-kun, who has a habit of collecting weird things, picked up and brought the lost "thing" home. Just like that, they are now living together, but their lovey-dovey life is so sweet that you'll feel embarassed watching it.

3.3 (147)

Chapter 77

3 years ago
Sci-Fi Romance Comedy
Dinosaurs Sanctuary

In 1946, someone discovered an island where dinosaurs had survived into the present. Through breeding and genetic manipulation, humans managed to increase their population and supercharge their popularity! Until, well... the unfortunate accident, when people's attitudes soured on the idea of visiting dinosaurs. This story follows a rookie zookeeper who is newly hired at Enoshima Dinoland, a struggling dinosaur sanctuary, and the fascinating creatures who need specialized love and care!

4.6 (146)

Chapter 2

3 years ago
Sci-Fi Slice of Life
A Beast Cries in the Wilderness

After waking up, Mikado Shuhei found himself locked in a cage in a mysterious medical facility. Without his memories Shuhei now has to fight against beasts who can speak like humans. A woman calling herself Akashi Maya then rescued him from this predicament. Super fiction action! --- **Links:** - [Original Novels (on Amazon.co.jp)](https://www.amazon.co.jp/dp/B07G4H25L2)

4.1 (644)

Chapter 93.5

3 years ago
Thriller Sci-Fi Action Psychological Comedy Drama Horror Mystery Tragedy
Isekai Truck

4.4 (571)
Sci-Fi Mecha Isekai
The Dark Archaeologist and the Guard

4.3 (403)
Sci-Fi Comedy Adventure
Yomeemon

4.0 (391)
Sci-Fi Romance Comedy
Apocalypse Zero

A series of natural disasters has reduced the world to rubble, with the survivors doing whatever they must to survive in a world gone mad. But one young boy, Kakugo, gifted with amazing martial arts and a superpowerful suit of armor by his late father, has been charged with making the world (or at least his school) a safer place. But his brother has a matching set of skills and equipment, and he's on a mission to bring peace to the world… by wiping out humanity!

4.0 (209)

Chapter 100.1

3 years ago
Genderswap Monsters Demons Incest Martial Arts Office Workers Post-Apocalyptic Sexual Violence Gore School Life Supernatural Thriller Sci-Fi Action Psychological Comedy Superhero Adventure Drama Horror
Shin Megami Tensei III: Nocturne - 4Koma Gag Battle

4koma anthology based on the videogame, "Shin Megami Tensei III: Nocturne."

4.2 (45)

Chapter 19

3 years ago
Thriller Sci-Fi Action Romance Comedy Adventure Drama Horror Fantasy Slice of Life Tragedy
COLOR/LESS

A gray Earth, where humanity was transformed into deformed beings. The curtains open on an action series where the goal is to recover a lost world, with the help of a strange-looking gun! An enormous solar flare caused the planet to lose all of its colors. Humans are deformed and declining in numbers. The key to reclaiming the old world lies within the power hidden in *color*, and one *girl*. Knowing that the few remnants of colors in the world yield a great power, Avidia, who is conducting research while protecting a girl named Chie, uses the colors to expand his own power, and throws himself in a battle against the Cult. --- 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.

4.3 (524)

Chapter 24.1

3 years ago
Thriller Sci-Fi Action Fantasy Mystery
Getter Robo - Change!! (Doujinshi)

2.9 (59)

Chapter 4

3 years ago
Sci-Fi Action Mecha Girls Love
Guilty Crown: Dancing Endlaves

Spin-off featuring Shinomiya Ayase as the main character.

3.0 (10)

Chapter 2

4 years ago
Sci-Fi Action Mecha
Vivy -Fluorite Eyes Song-

When highly evolved AIs set out to eradicate mankind, the carnage that ensues fills the air with the stench of fresh blood and burning bodies. In a desperate bid to prevent the calamity from ever occurring, a scientist bets everything on a remnant from the past. Turning the clock back a hundred years, AIs are already an integral part of human society, programmed with specific missions meant to be carried out for their entire course of operation. Vivy, the first ever autonomous AI, is a songstress tasked with spreading happiness through her voice. In a theme park where she hardly ever gets a proper audience, she strives to pour her heart out into her performances, bound to repeat it day after day—that is, until an advanced AI from the future appears before her and enlists her help in stopping a devastating war a hundred years in the making. With no time to process the revelation that flips her world upside down, Vivy is catapulted into a century-long journey to avert the violent history yet to come.

4.5 (95)

Chapter 7

4 years ago
Sci-Fi Action Adventure Drama Mystery Tragedy
Specimen M-51

4.2 (207)
Sci-Fi Comedy Slice of Life
Prima Doll: New Order

This is the prologue of Prima Doll, the story of the Automatas, automated mechanical girls.

4.4 (10)

Chapter 1

4 years ago
Sci-Fi Drama Slice of Life
A Certain Scientists Observation Logs

4.2 (140)
Sci-Fi Action Tragedy
Dragon Ball SD

The misadventures of Son Goku, Krillin, and other friends from the original story. Supervised by Akira Toriyama.

Chapter 44

4 years ago
Sci-Fi Action Comedy Adventure Fantasy Slice of Life
Rainbow Sentai

(from ebookjapan): Seven warriors, including Hoshi Hikaru, protect the earth from alien attacks. Their special move is Miracle Nova! "Rainbow Squadron Robin" is a science fiction anime created by "Studio Zero," the legendary anime production company of the Tokiwa-so masters. This must-see work, serialized in Weekly Shonen Magazine as a manga version, was made under the name "Akira Kazeta" as a joint work by Shotaro Ishinomori and Fujiko Fujio. Also included is "Rainbow Squadron Robin," written and illustrated solely by Ishinomori, and the record manga version!

3.2 (7)

Chapter 8

4 years ago
Thriller Sci-Fi Action Comedy Mecha Superhero Adventure
Hana and the Beast Man

"How'd you get in here, human?" A large wall has always stood between humans and the beast people. Hana accidently finds a hole in the wall and sneaks in, only to get lost. She meets Sana, who pins her down using his large frame. Hana trembles as Sana interrogates her with sharp eyes, demanding to know her purpose inside the wall. She can't escape! But, even though she's been captured as an "intruder," Sana ends up sheltering Hana in his home from the other beast people... What's going on? A sweet, heartwarming love story, though a little on the wild side! Read on to learn the joys of inter-species romance!

4.4 (211)

Chapter 17.5

4 years ago
Sci-Fi Romance Slice of Life
Me ×2

3.7 (88)
Sci-Fi Psychological
Transformers: Kiss Players

3.1 (42)

Chapter 2

4 years ago
Sci-Fi Action Comedy Mecha Superhero
Aa, Tsugi no Shigoto wa Bakemono Taiji desu

The Jindai Entertainment Office fights against skeletal beasts that are harmful to mankind. Aoharu Kubota, who works there, is unintentionally involved in the battle against the monsters, but he has a secret that even he does not know...

3.7 (25)

Chapter 2

4 years ago
Sci-Fi Action Horror Fantasy
Mega Man Battle Network Operate Shooting Star VS

A oneshot advertising the Rockman.EXE Operate Shooting Star game, published in the December 2009 version of Bessatsu CoroCoro Comic Special. It centres Amino Raito and his quest to improve at Net Battles, when he is suddenly challenged by Net Battler Mieharu. It went along with the 4-Koma releases by the same author.

Thriller Sci-Fi Action Adventure Drama Slice of Life Tragedy
Oz

On the 15th of October 1990, World War III breaks out. It only lasts for 40 minutes, but industrial establishments were nearly wiped out by the 1000 megatons of nuclear weapons used in the war. The Earth was then cloaked by in a nuclear winter which lasted for 6 months, and all the grain plants died. Each government fell into anarchy and transport and communication networks could not be restored easily. Soon, declarations of state establishment from the citizens in various areas came one after another, and America was split into 6 parts, adding other unapproved small states, it was divided into more than 20 countries. The story is set in 2021, 31 years after World War III. Filicia Epstein, a bionics genius, came to Sabano and Sergent Mutou was ordered to protect her. Searching for her only brother, Lyon, Filicia encountered with 1019, a cybernoid, who directed them to the phantom city, OZ, which is a shelter created by Lyon. As the story unfolds, they gradually realised what 'OZ' actually was… Very loosely based on some parts of *The Wizard of Oz*. Two OVAs were made. --- - **Won the 24th Seiun Award for Best Comic in 1993**

3.8 (22)

Chapter 32.2

4 years ago
Award Winning Survival Post-Apocalyptic Military Thriller Sci-Fi Action Psychological Romance Comedy Adventure Drama Mystery Tragedy