Beelzebub—the formidable right hand of Satan—commands fear and respect throughout Pandemonium. What her underlings don't realize, though, is that she's an airhead with a love for all that is fluffy and adorable! The only thing she might enjoy more is teasing her new attendant, Mullin, who is learning that serving Beelzebub is both heaven and hell...

Instead of pulling the red strings of fate between the humans, the god of marriage descended to earth to stop someone from dating. The protagonist's marriage is the key for the world's end. This is a comedic romantic cohabitation story between a workaholic god of marriage and a hot-tempered teacher.

He kills people like flies, a schemer and an executioner. He is also a blade, a chesspiece, an offering to the shrine of power. Everything ends in the Snow Plains, everything will also begins there.

From Kirei Cake:

It's been declared that Nishi High will close in two years. Since then, the student population has dropped to a mere seven. Hazakura Motoya, one of the remaining students, decides to stay for the free ride through high school.

Suddenly, everyone is shocked when they receive three new transfer students, Kayama, Mizumura, and Toujou, girls who are actually members of a special military division.

Soon after, Motoya and the three girls witness a giant tower suddenly appearing on the school grounds. Motoya is destined to enter with the girls in order to uncover the mysteries of this tower.

1. Moon Walker LTD. ~Albatross no Shuujin~
Gaia, a mysterious man with the talent to escape from most bonds is sent to a top security prision, only to meet a police investigator investigating this corrupt prison and then trying to escape...

2. Moon Walker LTD. ~Garimpeiro to Hikaru Ishi~

3. Moon Walker LTD. ~Tenkuu no Chiisana Yuusha~

In an alchemical ritual gone wrong, Edward Elric lost his arm and his leg, and his brother Alphonse became nothing but a soul in a suit of armor. Equipped with mechanical "auto-mail" limbs, Edward becomes a state alchemist, seeking the one thing that can restore his brother and himself... the legendary Philosopher's Stone

Note: Won the 49th Shogakukan Manga Award for the shounen category in 2004, the UK's Eagle Award for favorite manga in 2010 and 2011 and the Seiun Award for best science fiction comic in 2011.

Luo residence's illegitimate child, Luo Linjing, received the nymph project cultivator of the future accidentally. She had always been weak and sick due to premature birth. With the help of the system's "little god," she gradually became a strong beast master and doctor. However, she never expected that a conspiracy which could shake both the human and beast world would slowly unfold before her very eyes...

<Cheating Men Must Die> Side Story. The beginning of intern Su Lüxia journey of abusing scum.

As an office worker, Ji Bai Ping’s biggest worry is how to get work done more efficiently during work hours and not having any overtime stay. But I didn’t expect him to be so ordinary. One day, it’ll be a miracle to see world peace being maintained. The most important thing is that he isn’t the main problem, but the piggy that’s being dragged off on his legs?! This is simply unrealistic!

Lotus is a book clerk who works hard to succeed the bookstore in his parents' home. One day, when I got a mysterious book at work, I was taken to another world! The way to return is to live deeply with people in this world. To that end, Lotus who is about to start work has come to talk about whether to open a bookstore. Lotus decides to start a bookstore from scratch, but ...!? A bookstore clerk who loves books, a different world work fantasy, a long-awaited comicalization!

However, these mid-bosses kept getting defeated by the heroes, who continued to grow stronger with time. Which led to the demon king’s army needing to produce even stronger mid-bosses.
It was at that time that a certain demon stepped up.
Demonstrating great wit, she became the demon world’s founder of the official mid-boss training academy!

From MangaHelpers:

In the world, especially during ancient times, gods existed and, even now, find their place in the world. But at times, there are mortals who, whether intentionally or not, kill one of these gods and receive the “curse” of the name “Campione” or God Slayer. Those under this curse gain the power of the god they slayed and receive the mission to obliterate any false god who attempt to take control of any local turf.

Godou Kusanagi is one such unlucky human who accidentally killed the Persian deity of victory, Verethragna, and received the powers of the god’s ten forms: Bull, Ram, Camel, White Stallion, Goat, Boar, Raptor, The Wind, The Youth, and The Warrior. But this power draws in all manner of trouble, which is inevitable since the role of a god is ultimately difficult for a human. Yet, one such “trouble” is that this enhanced status has currently attracted three ladies of powerful magic and religious backgrounds, who all wish to aid him in battle. But are they really there to aid him, or do they just wish to find love with him? And what business does the leader of the three, the magic sword-mistress Erica Brandelli, have with these heavily unorthodox activities? [Midori-Mori]

From Storm in Heaven:

Kasane is your average kendo-obsessed girl, when a brush with a mysterious sword sends her back in time to the Sengoku Era. Stuck in an unfamiliar time and place, Kasane also has the poor luck of winding up right in the middle of the turmoil that surrounded Oda Nobunaga's rise to power!

She wakes up finding herself in a town of youkai...
a Japanese style fantasy interwoven with youkai.

After having been sealed for 300 years, the demon lord Giri reawakens and sends off his monster minions to wreak havoc in the world. King Uruga XIII decides thus to place announcements everywhere in the kingdom in search of a legendary hero who can defeat Giri. In the king's castle will be held a competition to discover who the true hero is. Forced by his hero-wannabe parents to go to the castle, Nike first visits the witch's house, where the magic-learning Kukuri joins him. Together they travel around the world defeating monsters, gaining new abilities and trying to uncover the mysteries surrounding the Migu Migu tribe.

This is the story of a detestable Demon Lord and his wonderful new wife, a destitute damsel! Our Demon Lord, Anima, is the strongest in all the world, feared by the denizens of the realm. He's forced to spend his days in solitude until, completely out of the blue, he gets summoned to another world! The one who summons him is none other than Luina, an exceedingly poor girl who runs an orphanage. The two of them quickly fall in love, with Anima swearing to use his power to protect his newfound family!

Xiao Yao, a young lady of a wealthy, respectable family in the 21st century, thought her life had ended when she passed away due to a deadly illness. However, she opened her eyes and found herself in the body of a manhua's villainess, Princess Abella.

Despite not having any magic powers nor capabilities, the pompous and vicious Princess caused countless people to suffer from her heinous acts. Her greed for the throne even led her to murder her own father, thus sentencing her to death while the protagonists of the manhua lived happily ever.

With a second chance at life in such a healthy body, Xiao Yao will not sit back idly while the Princess' impending doom befalls her again. This time, she will strive to change the Princess' fate, and along the way, will attempt to discover her hidden secrets and of those around her...