Yuuto is an ordinary high school boy who, one day, notices a mysterious tarot card by his bed. He shows it to his parents, who give him the good news - as the son of demonkin, he is eligible to become the next Demon Lord. As such, Yuuto is soon brought to a demonic academy in order to improve his devilish skills and earn the title of demon lord. And, you know, get a harem along the way.

From the author of Masou Gakuen HxH and Ecstas Online.

Fujinomiya Soujirou is transported to a fantasy world with only his Daisho (pair of samurai swords) in hand. The katana can talk and swiftly informs him that it is Hotarumaru, the legendary national treasure of Japan thought lost during World War II. The wakizashi is to young to have a voice, to Souji names it Sakura. This is the story of Souji and Hotarumaru's journey through a new world as he seeks to achieve ... a sword harem?

There was once a man who was summoned to another world, and saved it. Of course, he became too popular there, and turned into an isekai-normie. However, that man fell into a “trap”, and was forcibly returned to his original world. Moreover, he had to start over as a baby! This is the story of the way-too-fantastic ex-hero who lived as a gloomy high-schooler as he gets summoned once again to that other world in a very unexpected development!

Souichi Kirisaki, who teaches at a private middle school, has a problem. Three of his students, Senka Yutugami, Yuki Kitsuregawa, and Momoka Watarase, make fun of him. Souichi wants to be well liked, but the girls look down on him and tease him every day. Soichi is troubled, but the truth is that all three of them love Souichi, they just can't be honest with him, plus Momoka is a stalker... A sassy and cute romcom between a teacher and three middle school students!

Note: formerly a two-part Oneshot, it became serialized as of Chapter 3.

From Lezhin:
Once a world ruled by men, women stand up and fight to become men's equal. Now, in a land that is equally divided up between man and woman, the battle of the sexes is on! Who's going to win? But more importantly...what's the name of the game?

Because he did not pass his college entrance exam, Kagami Kyosuke cannot stay close to Kojo Hikari, the love of his life. So instead he gets a part-time job near her university and buys an old camera since Hikari is passionate for photography. But as it turns out, this camera also possesses a secret which will get him involved in all sorts of embarrassing and awkward situations, especially with Botan Oshikiri, his senpai and co-worker. How will Kyosuke's life play out now?

In a land where no magic is present. A land where the strong make the rules and the weak have to obey. A land filled with alluring treasures and beauty yet also filled with unforeseen danger.
Xiao Yan, who has shown talents none had seen in decades, suddenly three years ago lost everything, his powers, his reputation, and his promise to his mother. What sorcery has caused him to lose all of his powers? And why has his fiancee suddenly shown up?

A hangover leads to a shared life between a thief and a slave girl.

Harris is an adventurer who works as a thief and scout, a job that is often shunned due to poor reputation.
One day he gets drunk and buys a slave girl, Tiana. Tiana, who had been treated badly and not given enough food until then, comes to adore Harris, who treats her kindly, as her master. Harris, who had been hoping that Tiana would grow up to be a beautiful woman, is gradually drawn to her because of her innocence.

Harris' life changes drastically when he begins living with Tiana: warm meals, freshly washed clothes, and interaction with the townspeople who had never come close to him before. On the other hand, he finds himself in more and more troublesome situations, will he manages to escape from them with his skill and tact...?
This is the story of the "rebirth" of a shabby thief, which begins with an encounter with a slave girl.

Humans and demihumans live together in peace, and in this world, there's a normal human named Hironori Tabata.
One day, an angel named Suzuki Lina went out to find him and said she wants to have sex with him...the reason—? The Demon King will be resurrected in the future and Tabata's son will be the hero that will fight and defeat him.

Loser + Isekai + Cheat ability = Harem

The Jester ― More commonly known as the ‘Playboy’ Dylan, was fired from the party of the Heroes. The self-centred Heroes didn’t understand Dylan’s importance to the group.
They were just a group of one-man teams. Not interested in cooperation at all. Any failures are blamed on the Jester. Dylan, who was disgusted with such companions and was sick of playing as their comedic foil, happily accepted being kicked out.
The Heroes didn’t know. After saving them many times over with his magic tricks, the level 99 Jester can change his job title to that of a ‘Great Sage’.
“Life, how about a rewrite?”
He’s done being the clown. From here on out, he’s going to take the leading role.

An official spin-off of the the super famous fantasy "The Eminence in Shadow".
OP main character × isekai reincarnation × misunderstandings!? This is the beginning of a spin-off of the super-famous web novel isekai fantasy "The eminence in Shadow".
Cid is a boy who reincarnated in another world, and decided to enjoy a scenario of being "the eminence in shadow, someone who meddles with the story from the shadows, and exhibits his true power in secrecy". Thus unfolds the story of him and the secret organization he leads—shadow garden—as well their their pleasant friends! An easy-going 4-koma manga starts right here and now!

The manga adaptation of the popular web manga! Yasu likes his kouhai, Moriyama, who is at the same time extremely assertive, deadpan, and extremely passive aggressive.

This is a story about the main character named Inuyama, who is on the edge of life with no job or savings. One day, he is tasked with the role of "broadcast advisor" and "pseudo-boyfriend" of a gravure idol. Can he reach the top of the world of gravure in this romantic comedy harem? ♡

Everyday is a normal day in the small town where Kasuga Arata lives. However, everything changed on the day of the Black Sun, and following it, a magician appears before him. The Black Sun caused the Breakdown Phenomenon which destroyed the town where he lives. Because of this, his normal life was artificially reconstructed by a Grimoire that his childhood friend had left. Just what is the purpose of the magician coming to the town? What will he do with the Grimoire's keepsake?

From Tokyopop:
The plot centers on Kazuki Sendo, whose passion and talent for painting and drawing propels him into the world of doujinshi (underground comics). Soon, Kazuki's everyday life is consumed by the fanboy life and his girlfriend is beginning to have some serious doubts about him...
Sure, his new career as a struggling artist has begun, but at what cost to his friends and family?

Chiyoko, in her second year of high school, transfers to a co-ed school due to her dad's job transfer. Since she's only attended an all-girls school since junior high, she excitedly plans to fall in love in her new school. Out of the blue, she begins to see the love meters of 5 hotties and an options window as if she were in an otome game?! She encounters various types such as a glasses boy, a playboy underclassman, and a mysterious senior. Meet-cutes with boys come one after another. This is the beginning of a real otome game school life!

Kai, who comes from a family that specialized in dark-style occupations, sought even greater strength.

One day, he saved the fourth royal princess who was under attack by monsters. This was the the trigger for him managing to join an academy that specializes in training people for holy occupations.

He endures training so incompatible with his physical constitution that it could make him faint, all to become the polar opposite of the strongest dark knight—the Kingdom's strongest holy royal knight, The Royal Paladin.

An occupation-change drama of a genuine dark knight begins!!

"Now let us enjoy our deathmatch—to our hearts' content"

Who will you “play” with tonight—? A sweet and sugary harem romantic comedy about sleeping with elves ♡