Minapaka

Society has developed time machines, allowing people to travel back in time to the ancient past. Inochi and Akari, two university students majoring in paleontology, are traveling to various epochs. They witness dinosaurs, go camping in the Cretaceous period, and even eat ammonites. A dinosaur x girl story overflowing with ambience!

(Source: Houbunsha, translated)

6-okunen no Hakubutsu Tabi

A 600-Million-Year Natural History Journey

6億年の博物旅

Yoruno, Hitsujigumo

Agarizaki, Yuiko

A spaceship in the shape of a horse-drawn carriage travels across the galaxy. Riding in the carriage is Ridley, the scientist who built this eccentric spaceship, and her partner Watari, a shy girl. The two leave Earth, which has become uninhabitable due to environmental pollution, and set off in the carriage. Their goal is to find a safe planet to settle.

However, all the planets they visit are very strange! A planet with a god who can bring all things back to life, another planet where the luckiest people are considered the greatest, and a planet with countless libraries... The two girls are sometimes thrown for a loop by these strange worlds...

(Source: Kadokawa, translated)

Shoujo Seikan Hyouryuuki

Girl's Interstellar Adventure

少女星間漂流記

Oosaki, Takahito

A shelterpunk sci-fi story depicting the terminus of humanity which fled underground!

(Source: Shinchosha, translated)

Nenokuni no Musubi no Miko

ネノ國の結ビノ巫女

Imada, Yuuki

Shadow the Hedgehog, a failed wonder drug meant to cure Maria, struggles to find the meaning to his life. When the Earth National Defense raided the Space Colony ARK, they aimed to dispose of everything, including Maria and Shadow.

After Maria's tragic demise, Shadow is sent to a mysterious dimension known as White Space, in which he meets a mysterious one-eyed creature. The creature promises that Maria can be brought back to life as long as Shadow finds the Three Wishing Orbs.

(Source: Sonic Wiki Zone)

Shikkoku no Harinezumi: Shadow the Hedgehog

漆黒のハリネズミ シャドウ・ザ・ヘッジホッグ

Satou, Suzu

The year is 20xx. Machine and Man have been waging a war with no end in sight. Amidst all the violence, the machine army decided the leader of humanity, Ootani Akira, ought to be erased from existence, so they send an assassin back in time to eliminate him!

However, the Ootani Akira of the past was nothing but an incompetent human being, and what's more... every other character is even more incompetent?!

(Source: Kodansha, translated)

Share House with Terminator

シェアハウス ウィズ ターミネーター

Ogawa, Issui

Tanaka, Ahiru

Set 6,000 years after humanity has spread out across the stars, the story takes place inside a gigantic city ship orbiting a remote gas giant. The ship is home to a civilization of space fishers that catch valuable fish-like creatures known as Besshu. The society harvests the Besshu through ships operated by enforced male-female pairs of operator and pilot, who are seen by the male-dominated society as a married couple. The story centers on Terra, who is seeking a partner to operate a ship, and finds her in the mysterious runaway girl Diode, with both uniquely able to use the ship despite both being female.

(Source: ANN)

Twinstar Cyclone Runaway

ツインスター・サイクロン・ランナウェイ

Nagayama, Yoshitaka

After defeating Dark King Demigra, Goku, and his allies go to visit the Planet of the Kaio, only to find that Kaio North and co. are nowhere to be seen... While our heroes are trying to figure out what could have happened, a mysterious new foe appears!

(Source: MangaDex)

Super Dragon Ball Heroes: Meteor Mission!

スーパードラゴンボールヒーローズ メテオミッション!

Unreal

After global warming destroyed the Earth, humanity set off for the uncharted planet paradise known as "Arcadia." Crew member Yeongsu Dong wakes up from stasis to find himself the lone survivor, orbitting the planet in the debris field of the wrecked ship. He gets to the surface, where he is immediately attacked by wild creatures, and gets caught in the civil war among the native Arcadians. He must learn to communicate and survive in this strange new world, and find a way to stop an apocalyptic comet set to destroy his new home.

(Source: Webtoon Entertainment)

Grand Finale

그랜드 피날레

Yamaji, Arata

Hoshikuigoroshi no Egnaro

Hoshikui Killer Egnaro

星喰い殺しのイグナロ

Meeb

Ogino, Yuhey

Since his mother collapsed, Ryuji Hashiba, a high school student, has had to give up his dreams and work to earn the money to pay her hospital expenses. One day, Ryuji finds an unbelievably lucrative part-time job, and even though he knows it's shady, he participates in order to pursue his dreams again. When he follows his employer's instructions and passes through a mysterious door, an unknown world stretches out before him, and he is suddenly attacked by monsters...!?

(Source: Kadokawa, translated)

Yami Baito-saki wa Isekai deshita

闇バイト先は異世界でした

Hidaka, Tatsuya

It's been a thousand years since the world was covered in a sea of ​​sand. The former scientific civilization has perished, and the surviving humans are in a harsh struggle for survival against giant water-stealing creatures known as "mizuhami" (water eaters). One day, Noah, a boy who lives in a remote sea area, saves a woman who is being chased by mizuhami, but she turns out to be an incarnation of "Hinokami" (the god of fire), who has the power to burn anything she touches...!? A boy and a girl travel in search of the paradise at the end of the sand sea. A super-classical desert punk fantasy!!!

(Source: Mag Garden, translated)

12 Manga Like Blue Hole