“Gron” was the demons’ one true nightmare, a hero whose brutality surpassed their own. When he finally fell, the forces of evil rejoiced, dancing on his grave, certain his reign of terror was over. But they were fools. Death was not the end, but the beginning of a far darker nightmare. For he had been reborn—not in a hero’s armor, but in the wretched body of a lowly demon. And this time, he hadn’t returned to save the world… but to utterly annihilate his own new kind. The Demon-Slaying Madman—reborn as a demon, 尸山血海
Having lost his parents, eight-year-old Yuuichirou Amane is taken in by the Hyakuya Orphanage, where he struggles to bond with his new "family." However, this soon becomes the least of his worries, when a major pandemic suddenly strikes, killing all above the age of 13. Taking advantage of the chaos, vampires—who previously laid dormant underground—rise up and enslave the surviving humans, using them as livestock to harvest blood. Four years later, Yuuichirou and his family have adjusted to life under vampire control, although Yuuichirou still aspires to kill all vampires and end their reign of terror. This often puts him at odds with fellow orphan Mikaela Hyakuya, who emphasizes using wit and ingenuity to survive. Having garnered favor among high-ranking vampires, Mikaela gains inside knowledge and uses this to plan a daring escape. But during the attempt, the group of orphans is intercepted by vampire officer Ferid Bathory, who proceeds to massacre them. Yuuichirou is the only member of the group to escape to the surface, where he is discovered by the Moon Demon Company, a military unit dedicated to hunting down vampires. Given an invitation to join, Yuuichirou swiftly accepts, finally being presented an opportunity to achieve his ambitions and avenge his family.
The unexpected appearance of Nyx, the witch who had lost her memory, brought about a major change in Ren Xi's life. Together, they helped each other grow and develop, while also realizing a growing attraction between them. Ren Xi was focused on helping Nyx recover her memories, and during their journey, they uncovered an awe-inspiring revelation.
After being impeached, the ex-leader of the demonic realm and the dauntless hero, whose expedition was futile, were both expelled. Their destinies coincided, resulting in an enigmatic and exhilarating voyage.
Being a highly skilled fencer, Eunha was well-equipped to take on the role of Selena Evan, a minor character and daughter of a renowned swordsman in a fictional novel. However, things took a turn for the worse when the malicious Prince Ignus threatened Selena's life. Her brother, Celestine, had disappeared just before his mandatory military service, leaving Selena with no option but to assume his identity and prevent her family from meeting a tragic end. Unfortunately, Ignus soon discovered "Sir Celestine's" true identity and tried to force her into working for him. With execution looming, would Selena be able to escape Ignus's clutches?
Machio Hiraku, who passed away at 39 due to an illness, is granted the chance to venture into an alternate world. When God inquires about his desire to give him power, Machio pleads for a sound physique. His second request is to lead a tranquil existence, followed by a wish to comprehend the native tongue. Finally, he requests to become a farmer.
Welcome to the Demon World. Meitaro, the rightful heir to the Demon King, in an unexpected turn of events summons a little human girl to his world. Meitaro names her "Bibi" and begins to shower her with all kinds of charity, but...
After a fight with his foster father Shirou Fujimoto, Rin Okumura's life is transformed overnight when Rin is revealed to be the son of the demon lord Satan, king of the demonic realm of Gehenna. Soon after, his foster father becomes possessed and dies at the hands of Satan, leaving Rin and his twin brother Yukio alone in the world. Seeking revenge for Fujimoto's death, Rin attends True Cross Academy with Yukio in order to become an exorcist and join the Knights of the True Cross. Rin's new path, however, is filled with many difficulties. While new classes and dealing with his peers are already troublesome enough, he is also forced to conceal his newfound demonic powers and parentage. In addition, plenty of evildoers want to use him for their own ends. One misstep could lead to disaster, as not everyone at True Cross Academy is exactly who they seem to be...
Having come down from the mountains, Sora's purpose is to protect Jungha, who is unwell. Together, they have established several regulations to abide by. Firstly, Sora alone determines what constitutes an urgent situation. Secondly, during such circumstances, Jungha must heed Sora's commands. Finally, Jungha is strictly prohibited from harassing Sora. The question remains - will they be able to adhere to these rules?
Krad, the Demon King, is a shadow over the continent of Dominion. For thousands of years, he sat in his castle, waiting endlessly for a hero worthy of a final showdown. But after millennia of boredom, Krad stumbles upon human pop culture. Now, the absolute being with the power to destroy the world has a new obsession... and his favorite genre is—? **Original Webtoon:** [Naver Webtoon](https://comic.naver.com/webtoon/list?titleId=847812), [Naver Series](https://series.naver.com/comic/detail.series?productNo=13736313)
The existence of a magical enthusiast reached its tragic conclusion when he was killed by powerful spell casting nobility. However, his final desire to acquire more wizarding knowledge and expertise was granted when he was reborn as Lloyd de Saloom, the seventh heir to the throne of Saloom Kingdom. This reincarnation allows him to hone his magic capabilities without any restrictions.