Kemono Jihen follows the story of Kabane, who has been orphaned since birth. He has no memories of his parents, but he does have relatives. He’s living with his aunt and cousin when a specialist from Tokyo came into their place searching for his target, a monster. He befriends Kabane and even helps him till the land. When the time has come, he hunts his target that turns out to be Kabane. His aunt has called him in to execute him, since he unknowingly transforms into a ghoul. But instead of killing him -- since he’s actually an immortal -- Inugami recruits him instead.

Although Kabane is a ghoul, he’s nothing like Kaneki Ken of Tokyo Ghoul. Instead of being turned one, he’s born as one. He also doesn’t feel any pain or emotion, though the latter is due to his relatives’ negligence. Even though he’s a ghoul, Kabane retains the form of a youth. Even his powers are just being strong, not feeling pain, and not dying. Sounds boring? Well, you’ll be disappointed.

This series follows the story of Fuuko and Andy. In this world, powers are actually more curses than blessings. Their powers are actually negating natural phenomena. For Andy, that’s dying. He’s an immortal that has lived ages, figuring out what every immortal wants to do, dying. One fateful day, he meets a girl trying to commit suicide. That’s Fuuko, the one who negates luck. Anyone that touches Fuuko becomes very very unlucky. Now, what happens when an immortal wanting to die meets a very unlucky girl? Chaos ensues.

The series starts comically with Andy figuring out that more skinship brings out more of Fuuko’s power. If your guttered mind is going down there, then you’re actually right. Andy likes touching Fuuko in parts nobody naturally wants others to touch. Of course, Andy immediately meets his demise, though his immortality renders it useless. Nonetheless, the unique premise and great execution makes this series worth more fame than it currently has.

Re: Monster follows the story of Tomokui Kanata, but he will be known as Goburou throughout the whole series. That is because he has been reincarnated as a mere goblin. Even though he is reduced to a green-skinned monster, he has retained his memories from the previous world. With that, his evolution begins, and his kingdom shall start.

Following the life and adventure of Goburou from being a mere goblin that can be killed with attacks to whatever overpowered creature he will become is akin to watching our starter pokemon evolve. To say the least, it’s very exhilarating. Re: Monster has executed a premise that’s quite hard to imagine. More so, the world it revolves around offers vast possibilities, and we definitely want to know how the story will unfold next.

As the title suggests, the story follows the life of a spider. However, it’s not just any spider. It’s a monster spider that’s also once been a human reincarnated from another world. Unlike Re: Monster, however, Kumo Desu ga, Nani ka? (So I’m a Spider, So What?) doesn’t make our protagonist more human-like. Instead, the stronger she gets, the more monstrous she becomes. Maybe the pokemon analogy is more suited here?

So we’re following a spider, so what? This series is very much a dungeon core. Well, in the initial arcs at least. Nonetheless, our protagonist’s evolution is quite hard to guess. She literally has a window full of skills that will put social media’s terms and conditions to shame. On the other hand, that’s also what makes it interesting.

Again, we have a dude that died in this world and got reincarnated into the other one. This one, however, is still different from the two above. In this story, we follow the story of Rentt Faina. But unlike the fated heroes of other isekai, he… sucks. He remained at the bottom of the barrel even after ten years into the new world. But that is soon to change. He fatefully found a new, undiscovered part of a dungeon that’s been cleared years ago. That means good loot or a good sum of earnings. Both are good news to him. But when he stepped into it, he realized he messed up. Instead of treasures, he found a dragon. He then gets reduced into a skeleton. Now, he wants to regain his lost humanity. The good thing is that he can now evolve faster!

Mascots are undeniably cute and entertaining. At least, that’s how they are supposed to be. In this story, that’s far from reality. Our protagonist, Shuuichi Kagaya, is a monster, as he calls himself. He turns into a patched up mascot of a dog. However, he’s neither cute nor fluffy. He’s the kind that would fit a gruesome horror movie. He also has monstrous strength, extremely sharp smell, and a weird ability. He can allow another person to enter him. Now, shut down your guttered minds.

This is where the other main character, Clair Aoki, enters. She’s a deranged girl who has lost her parents to a monster, which is also her sister. Now, she wants to hunt her down. However, she doesn’t have the power to do so. She then meets Kagaya and becomes the filling of his emptiness. Now, that’s a story worthy of Halloween.

Probably the most fitting of Halloween in this list, Dorohedoro in its entirety is worthy to be called nightmare fuel. The story revolves around Kaiman, a half-kaiman half-human monster. He lives in a place called the Hole with other individuals cursed by magic users. Denizens of Hole aren’t not even treated as somewhere near humans. For the magic users, they’re merely test subjects not worthy of being given any rights. With that definition alone, you can imagine how intensely dark and gory this manga is. Still, it’s a manga you definitely should check out Halloween season or not.

Everybody has desires. For Light Yagami of Death Note, that means eradicating evil. Like Light, our main character, Shintarou Jagasaki, is living a pretty boring life before something interesting happened. Just like how the Death Note fell down from above, thousands of frogs that give desire to humans rained down on Earth. These guys will burrow themselves into humans one way or another and turn them into a half-human, half-monster being depending on what they truly desire.

Jagasaki had such a fateful encounter while he’s about to die. However, he kinda doesn’t know what his desire is. While on the verge of dying he saw a poster of Master Buppanatsu, the local eggplant mascot. Hold up, he didn’t turn into a mascot monster like in Gleipnir. Instead, his arm literally turned into a gun. Now, he’s a monster killing badass on the verge of becoming a full monster himself.

Pets are cute and wonderful, and they also have some pretty wide range. For some the purring cats are the best, while the charismatic canines are superior for others. Of course, there are those with some peculiarity who yearns for the rare and mighty. Just like them, Chainsaw Man’s protagonist, Denji, has a bit of an odd choice for a pet. His pet is called Pochita, a demon.

Denji isn’t that good at handling finances. Well, I guess nobody will give the insurmountable amount of debt that’s been left to him. He’s done all the weird jobs and even sold off his organs just to earn money. That even included his testicle. Nonetheless, he’s still short. Just as the yakuza was about to kill him for his debts, his pet, Pochita, merged with his body and turned him into the titular Chainsaw Man. Then, he sawed everybody to death. Talk about massacre.

Different monsters have different quirks. Some are seriously scary, while others not so much. The ones in Libidors are somewhere in the middle. As the name suggests, the monsters in Libidors are fueled by the individual libido. You read that right, the cells of the monsters literally get a boner as they get sexually aroused. Instead of just their pps, their entire body becomes swollen muscles. Something like Toguro’s massive muscle mass in Yu Yu Hakusho.

Our protagonist, Isamu, is kind of a unique case. Instead of losing his mind as his cells undergo weird boners, he retains his consciousness as only his right side becomes a weird clump of mass. Still, that makes him an infected fighting badass!