Manga like Rai Rai Rai

Kaijuu 8-gou

Also known as Kaiju No.8.

Status: Finished
Genres: Action , Sci-Fi

A man working a job far removed from his childhood dreams gets wrapped up in an unexpected situation…! Becoming a monster, he aims once again to fulfill his lifelong dream…!



Note:
Nominated for the 14th Manga Taisho Award in 2021.
Winner of the 7th Next Manga Award in the Web Manga Category in 2021.

Tags: Kaiju , Urban Fantasy , Shapeshifting , Shounen , Military , Henshin , Primarily Adult Cast , Super Power , Urban , Male Protagonist , Monster Boy , Tokusatsu , Guns , Gore , Conspiracy , Revenge , War , Body Horror , Heterosexual , Tragedy , Survival , Primarily Male Cast , Slapstick , Kuudere

Dandadan

Also known as Dandadan.

Status: Releasing
Genres: Action , Comedy , Drama , Romance , Sci-Fi , Supernatural

Momo Ayase strikes up an unusual friendship with her school’s UFO fanatic, whom she nicknames “Okarun” because he has a name that is not to be said aloud. While Momo believes in spirits, she thinks aliens are nothing but nonsense. Her new friend, meanwhile, thinks the exact opposite. To settle matters, the two set out to prove each other wrong—Momo to a UFO hotspot and Okarun to a haunted tunnel! What unfolds next is a beautiful story of young love…and oddly horny aliens and spirits?



Note: Nominated for the 15th Manga Taisho Award in 2022.

Tags: Youkai , Urban Fantasy , Aliens , Ghost , Super Power , Shounen , Female Protagonist , Surreal Comedy , Tokusatsu , Male Protagonist , Henshin , Ensemble Cast , Primarily Teen Cast , Gyaru , Heterosexual , Shapeshifting , School , Body Horror , Love Triangle , Exorcism , Conspiracy , Kaiju , Curses , Amnesia , Gore , Tragedy , Terrorism , Super Robot , Chuunibyou , Circus , Nudity , Gods , Dissociative Identities , Tsundere , Cannibalism , Bullying , Acrobatics , Suicide , Dinosaurs

Chainsaw Man

Also known as Chainsaw Man.

Status: Finished
Genres: Action , Comedy , Drama , Horror , Supernatural

The name says it all! Denji's life of poverty is changed forever when he merges with his pet chainsaw dog, Pochita! Now he's living in the big city and an official Devil Hunter. But he's got a lot to learn about his new job and chainsaw powers!



Notes:
Nominated for the 2020 Manga Taisho Award.
Winner of the 2021 Kono Manga ga Sugoi Award.
Winner of the 66th Shogakukan Manga Award in the shounen category.
Winner of the 2021 and 2022 Harvey Award for Best Manga.
Chapters 1-97 were released in Weekly Shounen Jump from Dec 3, 2018 to Dec 13, 2020. The series resumed from Ch. 98 in Shounen Jump+ on July 12, 2022

Tags: Demons , Tragedy , Urban Fantasy , Coming of Age , Psychosexual , Male Protagonist , Dissociative Identities , Gore , Body Horror , Cosmic Horror , Henshin , Urban , Monster Boy , Found Family , Survival , Female Protagonist , Work , Memory Manipulation , Shounen , Anti-Hero , Unrequited Love , Alternate Universe , Ensemble Cast , Cult , Heterosexual , Politics , Guns , Human Pet , Assassins , Yandere , Monster Girl , Revenge , Shapeshifting , Terrorism , Femdom , Surreal Comedy , Philosophy , Slapstick , Meta , Primarily Teen Cast , Super Power , Afterlife , Nudity , School , Cannibalism , Delinquents , Angels , Necromancy , Amnesia , Time Skip , Yakuza , Mafia , Tsundere , Time Manipulation , Zombie , Chimera , Motorcycles , Vore , Denpa , Prophecy , Bisexual , Scissoring

Kiseijuu

Also known as Parasyte.

Status: Finished
Genres: Action , Drama , Horror , Psychological , Sci-Fi

They arrive in silence and darkness. They descend from the skies. They have a hunger for human flesh. They are everywhere. They are parasites, alien creatures who must invade–and take control of–a human host to survive. And once they have infected their victims, they can assume any deadly form they choose: monsters with giant teeth, winged demons, creatures with blades for hands. But most have chosen to conceal their lethal purpose behind ordinary human faces. So no one knows their secret–except an ordinary high school student. Shin is battling for control of his own body against an alien parasite, but can he find a way to warn humanity of the horrors to come?



Tags: Male Protagonist , Seinen , Body Horror , Aliens , Shapeshifting , Super Power , Environmental , Gore , Tragedy , Philosophy , Heterosexual , School , Delinquents , Love Triangle , Nudity

Drama Queen

Also known as Drama Queen.

Status: Releasing
Genres: Comedy , Sci-Fi

After saving the earth, aliens have taken up residence with the humans in Japan. Nomamoto, a factory worker with an abusive alien boss, one day meets Kitami, who tells her his own family was killed by aliens. The two quickly forge a friendship, but one day Kitami does the unthinkable...



Tags: Aliens , Food , Crime , Surreal Comedy , Conspiracy , Revenge , Urban , Work , Female Protagonist , Shounen , Assassins , Anti-Hero , Male Protagonist , Terrorism , Bullying , Estranged Family , Pandemic , Time Skip , Suicide , Idol , Amnesia

Dai Dark

Also known as Dai Dark.

Status: Releasing
Genres: Action , Comedy , Horror , Sci-Fi

Zaha Sanko’s body has great and terrible powers–they say that possessing his bones will grant you any wish, even the desire to become ruler of the universe. But Sanko is still a teenage dude with his own life, and he isn’t about to let every monstrous lowlife in the galaxy rip him limb from limb. He and his skeletal buddy Avakian will use their dark powers to fend off any murder attempts while they search space for whomever put this curse on Sanko’s bones…because killing them might end the madness.



Tags: Space , Gore , Surreal Comedy , Aliens , Body Horror , Dystopian , Anti-Hero , Shounen , Skeleton , Henshin , Cult , Agender , Demons , Food , Cosmic Horror , Space Opera , Slavery , Nudity , Age Regression

COSMOS

Also known as Cosmos.

Status: Releasing
Genres: Action , Comedy , Drama , Sci-Fi

Kaede's search for a missing classmate leads to the shocking discovery that his friend is actually an alien in a human flesh suit. Grateful for Kaede’s help with her case, cute and ruthless insurance investigator Rin headhunts him. Kaede’s job interview leads to an epic battle on a commuter train, alien treachery, and a hidden spaceship. But before he can decide whether to accept the position or not, Kaede discovers another alien hidden in plain sight—one with a tragic story to share.



Note: Second place at the 10th Next Manga Award in the Print Manga Category in 2025.

Tags: Urban Fantasy , Aliens , Work , Urban , Female Protagonist , Male Protagonist , Episodic , Meta , School , Seinen , Super Power , Tragedy , Monster Girl , Tanned Skin , Cosplay , Gyaru , Tokusatsu

First Penguin Requiem

Status: Releasing
Genres: Horror , Sci-Fi , Supernatural

The Kaii are lurking unseen in the depths. There are those who must confront it; they are known as Leaders. They are the pitiful first penguins, forced to protect humanity. Kino and Azu, two girls among the Leaders who don’t even know their own origins, set out today on another mission where death lurks just around the corner, dreaming of the day they will finally be free. A story of two girls burdened by their fate as they hunt down the Kaii!

Tags: Urban Fantasy , Female Protagonist , Gore , Yuri , Body Horror , Work , Human Experimentation

Dorohedoro

Also known as Dorohedoro.

Status: Finished
Genres: Action , Adventure , Comedy , Fantasy , Horror , Mystery

In a city so dismal it's known only as "the Hole," a clan of Sorcerers have been plucking people off the streets to use as guinea pigs for atrocious "experiments" in the black arts. In a dark alley, Nikaido found Caiman, a man with a reptile head and a bad case of amnesia. To undo the spell, they're hunting and killing the Sorcerers in the Hole, hoping that eventually they'll kill the right one. But when En, the head Sorcerer, gets word of a lizard-man slaughtering his people, he sends a crew of "cleaners" into the Hole, igniting a war between two worlds.



Note: Includes 23 side stories titled "Extra Evil" and the side story "The Lizard Head and the Magic Whistle."

Tags: Dissociative Identities , Magic , Ensemble Cast , Anti-Hero , Amnesia , Seinen , Revenge , Dystopian , Body Horror , Gore , Monster Boy , Surreal Comedy , Primarily Adult Cast , Demons , Urban Fantasy , Curses , Time Manipulation , Super Power , Henshin , Gangs , Cosmic Horror , Body Swapping , Female Protagonist , Male Protagonist , Class Struggle , Nudity , Animals , Anthropomorphism , Zombie , Human Experimentation , Cyberpunk , Gender Bending , Brainwashing

ALIENS AREA

Also known as Aliens Area.

Status: Finished
Genres: Action , Fantasy

Tokyo, Planet Earth... High schooler Tatsumi Tatsunami lost his parents at a young age and now works multiple part-time jobs to live a hectic but peaceful life with his younger siblings. One day his body undergoes a sudden change... And now mysterious beings are showing up at his house! In order to protect the people he holds dear, in order to protect Earth (or "area"), Tatsumi must awaken! He better, because "they" are already here!



Note: Includes the one-shot "Hirage! Nyorai-kun" (ひらけ! にょらいくん, Exposed! With Nyorai) and two extra chapters.

Tags: Shounen , Aliens , Male Protagonist , Police