There was once a doctor fixated on creating the "ideal human being." After the doctor's death, his fabricant creations start attacking humans in order to attain the perfect body. When Ashibi Yao's entire family is murdered by these fabricants, he sets out on a journey of revenge accompanied by the doctor's final creation, Fabricant 100. This dark fairy tale launches only in the pages of Shonen Jump!

(Source: MANGA Plus)

On the first day of high school, Yuuki Kousuke was killed while trying to help someone. However, that was not the end of his story. The old man he helped happened to be a god. As thanks, he lets Kousuke reincarnate into another world. He was overjoyed to live the life of those overpowered protagonists seen in his favorite isekai stories, however, when he came to, he found himself at the very same spot he died. This is the story of a protagonist living a peaceful life in the modern era with the cheat ability given to him by a god... not. The cat he ended up saving turned out to be a god too. (Source: MangaUpdates)

It was an era of terror, a time in history where 10 suns shone as the world below burned under its mantle. As a result, Yae, a legendary warrior, was summoned and commanded by Chunjae, the father of these 10 suns, to shoots down all but one sun. But of course, the suns’ mother, Hwaehwa, did not take this news well and, in vengeance, swore to revive her dead sons. After a long time, Hwaehwa returns and challenges Chunjae to a game of Baduk. She brings Hanbal with her, who was once Chunjae’s follower and releases a thousand demons down to earth, proclaiming that they are a symbol of her Baduk stones. Now, in order for Chunjae to gather his stones, he searches for Dong Bangsak and provides one of Yae’s followers, Hangah Dong Gun (東君) to watch over him as he embarks on his journey to seal these demons...!

A spin-off centering on Lu Bu Fengxian.

After a few years, the main character Jinguu Masato, returns home. Due to his nature, he loves animals and he also likes to visit them. Because of this, he loved to visit the zoo since he was small and that's how he developed a close relationship with Hanayo. However, Masato gradually starts to notice some strange incidents happening in the zoo and after that, he's thrown into this unexpected world...

Mankind discovered the essence of the human soul, Edeya, and were achieving materialization.

Society was built around Edeya, which was invulnerable to conventional weapons. Humanity started to place all their focus into the combat power of Edeya.

Park Jinsong, the main character, possessed an F-rank soul and F-rank combat power. After the introduction of a poor military program to his high school and the Edeya rank system, Park Jinsong became one of the weak, and suffered under his peers’ contempt for 10 years…

However, in reality, the Edeya he had awakened was actually the S-rank “Absolute Killing Intent”.

Park Jinsong was greatly disturbed by the fact that the essence of his soul revolved around the thought of killing others, and continued to live his life while thinking of himself as a worthless F-rank.

Will Park Jinsong, with a soul for killing, be able to get his killing intent under control and prove that there are no ranks to one’s soul?

A volume of four terrifyingly witty novellas. Skin and Bone: Poor Taichi is bullied incessantly at school because of her weight problem, but she undertakes a diet from hell, which leaves her nothing more than skin and bone. The Red Satchel: Haruna's deathly appearance shocks her friends when she returns to school. She disappears again, leaving only her red school satchel and its gruesome contents. Two Sisters: Young, beautiful Ms. Numata is a popluar teacher, but her outer appearance hides a ghastly truth she has kept secret since birth. Caterpillar: No one can understand Mayuko's obsession with caterpillars, but everyone at school hates her for it. She is bullied relentlessly, but knows that her destiny lies in a different place.

The Hino Horror series:
Hino Horror Volume 1: The Red Snake (赤い蛇 Akai Hebi)
Hino Horror Volume 2: The Bug Boy (毒虫小僧 Dokumushi Kozou)
Hino Horror Volume 3: Oninbo and the Bugs from Hell (地獄虫を食う! 鬼んぼ Jigoku Mushi Woku! Oninbo)
Hino Horror Volume 4: Oninbo and the Bugs from Hell 2
Hino Horror Volume 5: The Living Corpse (死肉の男 Shiniku no Otoko)
Hino Horror Volume 6: Black Cat (黒猫の眼が闇に Kuroneko no Me ga Yami ni)
Hino Horror Volume 7: The Collection (M Collection)
Hino Horror Volume 8: The Collection 2
Hino Horror Volume 9: Ghost School (Ghost School (HINO Hideshi))
Hino Horror Volume 10: Death's Reflection
Hino Horror Volume 11: Gallery of Horrors (Kyoufu Gallery)
Hino Horror Volume 12: Mystique Mandala of Hell (Kaiki! Jigoku Mandara)
Hino Horror Volume 13: Zipangu Night
Hino Horror Volume 14: Skin and Bone

Spinoff series centers on daily life of dragon character Elma.

As the grandmaster who founded the Demonic Sect, Wei WuXian roamed the world in his wanton ways, hated by millions for the chaos he created. In the end, he was back-stabbed by his dearest shidi and killed by powerful clans that combined to overpower him. He incarnates into the body of a lunatic who was abandoned by his clan and is later, unwillingly, taken away by a famous cultivator among the clans—Lan WangJi, his archenemy.

This marks the start of a thrilling yet hilarious journey of attacking monsters, solving mysteries, and raising children. From the mutual flirtation along the way, Wei WuXian slowly realizes that Lan WangJi, a seemingly haughty and indifferent poker-face, holds more feelings for Wei WuXian than he is letting on.

The story involves human mutations called "Diclonius", who grow horns on their heads and possess telekinetic powers, in the form of invisible "arms" called vectors.
The tendency for violence among Diclonii varies among characters. Certain scientists contain them in a Facility in cells, where they are subject to inhumane experiments to test their abilities or where they await execution for being too dangerous.
An infectious virus is also associated with the mutation. This virus is spread through non-lethal contact with the vectors of a diclonius.
The main non-mutant character in the story is Kouta, who ends up becoming increasingly involved with these dicloniuses, as they seek refuge from the scientists.
The main diclonius character is Lucy/Nyuu, a killer whose alter ego is a hapless and very cute child whose vocabulary and intelligence are quite limited.

When one door shuts, another opens.

There are a lot of things that Kouki doesn't have—no hobbies, no friends, no lover, no stable job, and no will to live. So when a random tussle with some kids gets him stabbed, he thinks maybe this is finally his ticket out of this crappy life. But just as he's about to pass out he sees a beautiful "angel"... How is Kouki supposed to cope when less than a month later, he's mysteriously healed, has astronomical bills to pay, and suddenly has the same beautiful angel as his amnesiac roommate?

Sung Hoon was a normal High School student, but one day he finds himself with a cute little tiger girl. He is told that the world will end if he doesn't marry her.
Thus the story begins with the cute smile of the tiger girl.

Samataro Kamiyama is the envy of his classmates. He always gets the best seat in class, never has detention, and his best friend is both sweet and pretty. He's also surrounded by his loving family, gorgeous older sister and adorable younger one... but hey, that's just what life is like when you're the son of a god! It's always clear sailing, never a cloud in the sky... and poor Samataro is bored to tears. How can he ever learn to be a god if he can't make it on his own as a human first? It's the last straw when his divine parents take their intervention a little too far... but can he really survive a normal life, free of miracles and magic?

In the year 1492 of the Gregorian Calendar, in the Eastern Kingdom of Mikado:
The Samurai guard the Luxurors and Casualries - the people - of Mikado. The wild Samurai Walter seeks to improve his self-taught, but unrefined skill. The Samurai Gina keeps a close, worried eye on the wild Walter. One night, the pair, while keeping watch, are suddenly transported to an unknown world.
There, they see a tyrant - a demon that is far stronger than any they have encountered.
As a result of the battle with the tyrant, the fate of this pair begins to shift.

The "bittersweet, mysterious story" revolves around Chocolat Aikawa, a chocolatière who runs a shop called Chocolat Noir. She can grant wishes to the troubled people who visit her shop -- if they give her something precious in exchange.

In the Chocolat no Mahou (The Magic of Chocolate) series:

V.01 - Chocolat no Mahou
V.02 - Bittersweet
V.03 - Creamy Sugar
V.04 - Dark Spice
V.05 - Evil Essence
V.06 - Fruity Flavor
V.07 - Guilty Crunch
V.08 - Honey Blood
V.09 - Ice Shadow
V.10 - Jewel Syrup
V.11 - Knocking Egg
V.12 - Love Flake
V.13 - Melty Night
V.14 - Nutty Carnival

A-rank adventurer Alec meets Shiori, a woman with the mysterious title of "household mage." Shiori, the low-rank magician, is able to prepare warm baths and delicious meals on their adventures with her strange use of magic, providing an all-too comfortable environment that would be unfitting to call an ordinary camp. Though she has thoroughly won over the hearts of Alec and his companions, she has a secret. (Source: Mangaupdates)

This is the proper traditional fantasy!

A growth-type hero series that fills your heart as you read, for the webtoon readers who are fed up with obvious overpowered MC series.

Our MC Leon decides that he will overcome his rival Leon, who stood at the top of the Royal Academy, with only hard work and sheer willpower. He hits a wall that cannot be overcome with training alone and fell into despair, only to get chosen by the Holy Sword Elcid that was fated to go to his rival, Leon. With the Holy Sword Elcid that fell and chose MC Leon as the Hero candidate because of his righteousness, Leon receives harsh training and finally clutches victory from the seemingly impossible duel with his rival! Having attained the qualification to be the owner of the Holy Sword, MC Leon begins his adventure to leave the Royal Academy and become the hero who saves the world…

"When I talk about ‘warped manga from a warping mind’, I’m thinking about this kind of incoherent story. ‘The Human Clock’ is a lot simpler to explain. The hero is Yubi Chizuo again. He’s a student like before, but this time round he’s a dropout. He stays in his house, which is a family shop selling watches and clocks. He gazes and gazes at the clocks. Little by little, he turns into a clock. That is the entire story. It reminds me of Kafka’s Metamorphosis." from Manga Zombie.

Shirou cooks food, the rest of the Fate cast enjoys it. It's chill.

Female college student Aoi inherited her deceased grandfather's ability to see ayakashi. One day, while Aoi is feeding some ayakashi, a demon appears! He declares that Aoi's grandfather owed a great debt, and as compensation, Aoi must marry the demon! Aoi refuses, and decides to pay off the debt by working at the inn of the afterlife, the Tenjin-ya.