Because he had the heritage of the ancient Demonic Emperor, Demonic Emperor Zhuo Yifan met the misfortune of being betrayed and killed by his trusted disciple. After being reborn, his cultivation went back to zero and he was trapped by a heart demon, given no choice but to become the housekeeper of the Luo Family's lone eldest miss. From being a Magic Emperor to being an insignificant housekeeper, how would he get along with his "heart demon eldest miss" and what power would he gain in order to lead himself and the declining family to rise back to the peak of the continent! [Side note: 魔 can mean "magic" and "demon", while 管家 can mean "butler" and "housekeeper". I'm not sure as to why the previous translator decided to use "Magic" when it's a cultivation world, but I'll just follow. (And Zhou Fan never does the work of a housekeeper throughout the manhua.)]

Every 1,000 years, 100 demon children are sent to Earth to compete in a battle to become king of the Demon World. Each demon is paired with a human partner who is given a spell book of a specific color. The human can cast the demon's spells through their book. If a demon's book is burned, they disappear and return to the Demon World. The last demon remaining becomes the king. The show is oriented around Gash Bell and his human partner, Takamine Kiyomaro. In 2003 Zatch Bell! won the Shogakukan Manga Award for best shounen title of the year.

From Easy Going Scans: Lord Perdien is a 1st class demon who has been living in the human world with his son. He has no intentions for his son, Miryu, to follow the path of the demons and while their lives were peaceful up until now, a succubus arrival and a sudden illness of his son are more than enough to disturb their peaceful way of living. He has to make an important choice: Either to let his son die or listen to whatever the succubus offers him for a cure. Original webcomic

A new generation of swordsmen is betrayed and dies in the hands of his beloved ones on their wedding night. Unexpectedly, God made people die, but Jian Zun did not die but was born again in the world. Let's look at Mu Yuan, who bears the deep hatred of the blood, how to re-enter the spirit realm and kill the Quartet!

The world is submerged, and sea monsters rule the earth. Will Bota and his family ever make it to safety, and escape this aquatic hell? ...And who in the world is Kana?!

A story about a poor student who works as a part-time grave keeper. The boy is flung into a mysterious world, recovering old forgotten memories, and fighting to save a girl.

Jiang He, a girl from the Tang Dynasty, traveled through a thousand years and appeared in front of Xu Qing. Fate brought together this love that spanned a thousand years. Everything the girl was familiar with has become history. Relatives, friends, and enemies have all been left behind 1,200 years ago. The boy is unreserved and leads the girl to start a new life. Pain, confusion, cheers, and laughter will remain in this new world.

From Isekai Soul-Cyborg Translations: In regards to the MMORPG Cross Reverie, Sakamoto Takuma boasted an overwhelming strength that was enough for him to be called the Demon King by the other players. One day, he gets summoned to another world with his appearance in the game. There, there are two people that insist, “I am the real summon master.” Takuma gets slave-turning magic used for summoned beasts cast on him by the girls – However, the peculiar ability {Magic Reflection} was invoked! The ones that were turned to slaves were the girls! Takuma was bewildered. He’s the strongest magician but, he doesn’t have any communication skills. Panicking, the first words that came out were the ones that he used inside the game role playing the Demon King!? “I’m amazing you say? Of course I am. I am Diablo… The one feared as the Demon King!” This is the story the Demon King (acting) that would soon inspire the world and his other world adventure that he plunges through with his absolute strength, raise the curtain!

Su Yu has a secret. In his dream, he has been chased by thousands of people for more than ten years, and he will never stop. At the age of eighteen, he witnessed his father Su Long rushing to the battlefield to fight with thousands of people. In a few years, he will become the robbery of the heavens and all the races.

Based on the great natural law, the strong is invincible. The antediluvian method of elixir shines the mountains and rivers, the all-conquering treasured sword annihilates the universe and transmigration, and the blood vessel of Shura ruins the supremacy of every realm. Inheriting from the mandate of heaven, and practicing unrivaled skills, Nan Qin overwhelmingly started his own travel towards the strong which is immortal and matchless! "Burn the sky and boil the wine to study the rule of Shura, and then kill those beast all!"

Sakura is the princess of Clow - and possessor of a mysterious, misunderstood power that promises to change the world. Syaoran is her childhood friend and leader of the archaeological dig that took his father's life. They reside in an alternate reality where whatever you least expect can happen - and does. When Sakura ventures to the dig site to declare her love for Syaoran, a puzzling symbol is uncovered - which triggers a remarkable quest. Now Syaoran embarks upon a desperate journey through other worlds - all in the name of saving Sakura.

At first, Yona gave some major side-eye to the popular game “Concubine Walkthrough” until she got sucked into it—literally! Now stuck as the villain, she has her hands full facing the infamously cruel king, shaking off scheming concubines, and befriending NPCs. There's only one way the Game Master will let her out and that's to become the Queen! Will she be able to stay true to her honest and straightforward self despite the palace's intrigues? One extra problem: she's got competition… Royal Game / 후궁공략

Yuuji is a genius at track and field. But he has zero interest running around in circles, he's happy as a clam in the Occult Research Club. Although he's only in the club for kicks, things get serious when a real spirit shows up at school! Life's about to get really strange in Sugisawa Town #3 High School!

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Ryu Han-Bin was a normal person who just had been discharged from his mandatory military service, when he was transported to another world. Left to fend for himself, he was given the goal of surviving and growing stronger in a desolate world riddled with monsters. The problem is the 'Guideline' that was supposed to be his guiding system to survive is filled with errors.

From Tokyopop: Jang Kun, Gwon Su, Woon Suk are average kids with average problems, but in the virtual world of Lost Saga, they go by the alias:user name Lotto, Boromir and Ah-Dol; they're heroes of the master class level or more so infamous troublemakers . They could become legends...if they can stop bickering long enough to level up. So whether it's werewolves running rampant or a gorgeous pair of thieves looking for revenge, our boys must be ready for anything. Then one day Jang Kun, Lotto's real life self encounters a mysterious girl around his age, and ends up with her game card. What will he end up doing with it, and even furthermore how does it even connect with his gaming console? Is this more then what it seem to be, the mysterious game card with the name Yureka on it.

The action story is set in Edo-era Tokyo in the early 1700s. The eighth shogun Tokugawa Yoshimune ordered boxes to be installed so commoners can submit their thoughts. After hearing their voices, the shogun creates a new magistrate unit — Mushibugyou — to protect the people in the heart of the city. Each member is a specialist with unique fighting skills. Source: ANN

In the decade since the world became aware of the existence of magic, the world has undergone massive upheaval. However, a boy named Touta lives in seclusion in a rural town far removed from these changes. His ordinary life is highlighted by his magic-using female teacher and his supportive friends. When his tranquil daily life is disrupted, he embarks on a unique adventure. This is a sequel to the manga Mahou Sensei Negima.

What should you do when a 1000-year-old imoogi named Bari suddenly appears in your apartment and demands you pay for the sins of your ancestors? Help him become a dragon, of course! Young Yoo's life is on the line as he teaches Bari the ins and outs of getting along with humans in order to prepare for the Nakdong River Dragon Exam. Will Young be able to help Bari pass the exam and become a full-fledged dragon?

10 years have passed since Son Goku left with the dragon, Shenlong. After seeing that peace is not forever, the Z warriors kept training as part of their life. A new evil appears, with dark secrets older than the Universe itself. Will the Z warriors be able to stand their ground and protect the planet from evil?

This is an era of cultivating immortals for all! Everyone is working hard for the flying of the imperial sword and the cultivation of the immortal! Wang Ling is a counterexample! Fairy? Cultivation? Elixir? He didn't care, but the repair was escalated like a plug-in. A 3-year-old Yu Jian and a 7-year-old deity, he wanted to live a low-key Buddhist life but fell to an ordinary high school! It's really tiring to accidentally become the focus of attention ... oh ... how lonely Invincibility is.

Fang Haotian is a young boy who is deeply in love with a girl called Ningyu, but her parents are opposed to their relationship. Ningyu is arranged for marriage to another man. Can he become strong enough to take back his beloved Ningyu from this man?

The story of angels who don't behave like angels and devils who are kinder than them. A new romance begins! Original Webtoon

Lin Dong, a child of an offshoot branch of the Lin Clan finds a mysterious Stone Talisman inside a cave. From then on Lin Dong’s destiny slowly begins to change.

Princess Yona lives an ideal life as the only princess of her kingdom. Doted on by her father, the king, and protected by her faithful guard Hak, she cherishes the time spent with the man she loves, Soo-won. But everything changes on her 16th birthday when she witnesses her father’s murder!

Due to a mistake on his student’s part, a super Martial Artist had received a wrong class in an online game and had become a mage. He who was used to curbing violence with violence and using strength to subdue strength could only make the best out of his mistake. Taking on a new lease in life, he became a violent close combat mage. When strength and magic came perfectly together, a new gaming path had been opened by him!