Manga like Seikou Ooja

Hikaru ga Shinda Natsu

Also known as The Summer Hikaru Died.

Status: Releasing
Genres: Horror , Mystery , Psychological , Supernatural , Thriller

Two boys lived in a village: Yoshiki and Hikaru. The two did everything together...until the day Hikaru was encompassed by a mysterious light. That was when everything changed—Hikaru most of all. Yoshiki still wishes from the bottom of his heart to always stay by his side...but is there even a Hikaru left to be with?

Tags: Monster Boy , Male Protagonist , Rural , Cosmic Horror , Body Horror , Tragedy , Primarily Teen Cast , Boys' Love , Eco-Horror , LGBTQ+ Themes , Curses , Unrequited Love , Gods , Mountaineering , Urban Fantasy , Seinen

Takopii no Genzai

Also known as Takopi's Original Sin.

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

Takopi travels from his home of Happy Planet to spread happiness across Earth, but meets the unsmiling Shizuka upon landing. Her friends at school and home life seem to be the source of her somber expression—and the pure-hearted Takopi is determined to change things for the better! But what truths await him when the curtains rise in this shocking drama?!



Tags: Tragedy , Bullying , Denpa , Aliens , Time Manipulation , Suicide , Primarily Child Cast , Female Protagonist , Shounen , Crime , Philosophy , Memory Manipulation , Magic , Coming of Age , Clone

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 , Environmental , Super Power , Gore , Shapeshifting , Tragedy , Philosophy , Heterosexual , Delinquents , School , Love Triangle , Nudity

Summer Time Render

Also known as Summertime Rendering.

Status: Finished
Genres: Action , Drama , Mystery , Supernatural , Thriller

A tragic incident calls a young man named Shinpei back to his hometown on the remote island of Higotoshima, Japan. But something sinister awaits upon his return, and a chilling sequence of events unfolds that will have dire consequences for Shinpei, for Japan, and for the entire world!



Tags: Time Manipulation , Rural , Shounen , Male Protagonist , Ensemble Cast , Body Swapping , Time Loop , Urban Fantasy , Demons , Survival , Shapeshifting , Aliens , Reincarnation , Gore , Tanned Skin , Dissociative Identities , Mythology , Crime , Cosmic Horror , Tragedy , Suicide , Gods , Denpa , Religion , Love Triangle , Outdoor Activities , Amnesia , Nudity , Historical , Heterosexual , Unrequited Love

Gleipnir

Also known as Gleipnir.

Status: Finished
Genres: Action , Ecchi , Mystery , Supernatural

Shuichi Kagaya is an ordinary high school kid in a boring little town. But when a beautiful classmate is caught in a warehouse fire, he discovers a mysterious power: he can transform into a furry dog with an oversized revolver and a zipper down his back. He saves the girl’s life, sharing his secret with her. But she’s searching for the sister who killed her family, and she doesn’t care how degrading it gets: she will use Shuichi to accomplish her mission …



Tags: Super Power , Shapeshifting , Monster Boy , Seinen , Anti-Hero , Rural , Psychosexual , Battle Royale , Aliens , Body Horror , Nudity , Memory Manipulation , Gore , Monster Girl , Guns , Heterosexual , Female Protagonist , Male Protagonist , Yandere , Love Triangle , Clone , Time Manipulation , Suicide , LGBTQ+ Themes

Konjiki no Gash!!

Also known as Zatch Bell!.

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

Kiyo is a brilliant junior high student whose inflated ego (and tendency to blow the grading curve) has made him a major target for teasing at school. So his father sends him a bizarre birthday present – a strange little boy named Zatch Bell – to help him make friends and reform his bad attitude. Zatch brings with him a mysterious red volume of spells, and Kiyo discovers that Zatch has magic powers that are unleashed by reading from the book! But there are more surprises to come, and Kiyo's destiny is about to change forever!



Note: The chapter count includes the volume-exclusive bonus chapter “The Two Queens”.

Tags: Battle Royale , Shounen , Magic , Male Protagonist , Coming of Age , Demons , Ensemble Cast , Primarily Child Cast , Super Power , Urban Fantasy , Survival , Slapstick , Foreign , Time Skip , Amnesia , Memory Manipulation , Surreal Comedy , Dragons , Kaiju , Bullying

Bibliomania

Status: Finished
Genres: Adventure , Drama , Fantasy , Horror , Psychological , Supernatural

Alice had woken up in Room 431 of a mysterious manor. "You must not leave this room," warned the Serpent, but she paid it no heed and her body began to rot... Will she be able to escape the cursed manor?

Note: Nominated for the 2019 Japan Media Arts Festival Awards in the Manga category.

Tags: Post-Apocalyptic , Philosophy , Female Protagonist , Tragedy , Body Horror , Cosmic Horror , Anti-Hero , War , Seinen , Demons , Urban Fantasy , Religion , Samurai , Bullying , Curses

Shibatarian

Also known as Shibatarian.

Status: Finished
Genres: Drama , Horror

In the spring of my third year of middle school, I found Shibata buried beneath a sakura tree. We watched movies and became fast friends, even planned to make a movie together for the school festival...but no one at school seemed to know him. I will discover Shibata and the whole world will turn into Shibata. This is a story of, by, and for Shibata. Now showing in a theater near you.



Tags: Survival , Clone , Male Protagonist , Body Horror , Yandere , Time Skip , School , Filmmaking , Revenge , Shounen , Battle Royale

Narutaru

Also known as Shadow Star☆.

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

Shiina Tamai, an energetic sixth-grader, found a star-shaped creature on the seabed during her visit to her grandparents' house. She befriended it and found it has some supernatural powers, such as flying and incredible strength. However, what seemed like a dream may turn out to be her worst nightmare as she meets other kids who have similar creatures and dark, destructive desires...

Note: Includes an extra chapter.

Tags: Seinen , Primarily Child Cast , Denpa , Female Protagonist , Tragedy , Philosophy , Body Horror , Cosmic Horror , Bullying , Gore , Military , LGBTQ+ Themes , Transgender , Age Gap