Once upon a time, in a certain country. A mermaid was brought to the castle. The strange mermaid with two legs was to be delivered to the king of a neighboring country... But when the prince saw her, he said, "You! Will you be my princess?!" And so begins an unexpected life together! How will the two (animals) love each other? A fairytale love comedy about two people who are in love, starting, starting...

Bi-Kwang is a handsome young warrior who becomes a drooling mess whenever he sees a pretty girl. Out on the road he meets an extraordinary swordfighter with no name who is searching for a legendary master warrior. Bi-Kwang promises to aid the swordfighter if he lets Bi-Kwang meet his beautiful sister. Of course, it turns out the swordfighter is the sister, Hwa-Rin Dahm, and she must switch identities to keep the plot moving along. Bi-Kwang is immediately smitten, and thus we have a triangle involving only two people.

This manhwa was made into a MMORPG.

Hino is your average high-school student. Sakuba is an amazing, talented, honor-roll student. But when Hino discovers Sakuba's secret half-demon identity, his life becomes anything but ordinary.

Tsukimiya is a dutiful kid who has been looking after his family since his mother's passing, and a popular pretty boy at school, but he rejects all those who confess to him due to an unrequited love he holds for one of his teachers. However he suddenly finds himself kidnapped by a group of beautiful women, who promise him a life of daily torture from now on.

Based on the early Japanese folktale Taketori Monogatari, this is a story about a Princess exiled from the moon and her story on Earth. On the dark side of the moon exists a highly advanced civilization divided into two clans, the Takenouchi family and the Umenouchi family. Takenouchi Kaguya is the daughter of Takenouchi Fumiya, the acting queen of the clan. Kaguya is the next in line for the position for queen but she refuses to be obedient and wants to enjoy life. The bratty Kaguya despises her mother and the people around her for being so strict and often wishes she was never born as a princess. Queen Fumiya has been severely ill for many years now, but has kept it from her daughter in order to protect her but her condition has worsened. The Umenouchi family takes this opportunity to start a coup and takes over the government. Knowing that she is not able to ensure her daughter’s safety on the moon, Fumiya sends Kaguya to Earth with the powerful katana that symbolizes her ownership of the moon. Without the sword, the Umenouchi family cannot usurp control of the moon. Kaguya is forced to mature and become stronger in order to take back what was once her mother’s!

Sano Yuji, a black company employee, is summoned to another world while finishing his work at home. His profession in the other world, a Monster Tamer, is considered a job that makes it difficult to become an adventurer. However, thanks to some slimes he met, which read several magical books, he gained magical powers and the second profession, Sage.
Yuji acquired overwhelming power, but is he conscience of his strength? Blindly becoming unparalleled and strongest in the world!

The Hero has defeated the Demon King, but the Princess he meant to save turned out to be a Prince. NEETdom, here he comes, but a life of relaxation surrounded by animes is a pretty sweet deal.

Unfortunately, he gets caught up in millennia old legends, curses, and a twisted plot involving multiple Kingdoms and many dragons. Through and through, though, he'll follow a path of whimsy, even if that involves him palling it up with "villains".

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?

Nayu, the one in a million genius witch who has been the talk of the town, has run out of magic! The price for all the things she has been allowed to do because of her brilliance is coming back to the former genius witch like a boomerang... Then, she meets her past student "Komugi" who loves her very much. This is a boomerang love comedy of karmic retribution by a former genius witch who can't be left alone even though it stings a little, abandoned by her magical powers!

A bespectacled pervert girl named Ling Yun discovered the domineering side of the seemingly weak and handsome Bai Ze. Thus, everyday was spent catching demons it was full of fear and welfare!

The journey to the West was a conspiracy of heaven! After Sutra (Buddhist sacred texts) went missing for more than a decade, Heaven sent its army to search, in order not to let the Sutra once again fall into the hands of heaven, the journey to West begins again.

While the demons were rising, mankind was about to become extinct. Six temples rose, and protected the last of mankind. A young boy joins the temple as a knight to save his mother. During his journey of wonders and mischief in the world of temples and demons, will he be able to ascend to become the strongest knight and inherit the throne?

From MangaHelpers:

Katagiri Yuichi believes that friends are more important than money, but he also knows the hardships of not having enough funds. He works hard to save up in order to go on the high school trip, because he has promised his four best friends that they will all go together. However, after the class's money is all collected, it is stolen! Suspicion falls on two of Yuichi's friends, Sawaragi Shiho and Shibe Makoto.

Soon afterward, the five of them are kidnapped, and wake up in a strange room with a character from a short-lived anime. Apparently, one of them has entered them into a "friendship game" in order to take care of their massive debt. But who was it, and why did they have such a debt? Could they have stolen the money from class to pay for entry into the game? Katagiri and his best friends will have to succeed in psychological games that will test or destroy their faith in one another.

It's been one year since Rin moved to Tokyo for high school. He was told by the landlord of his apartment that he didn't have to pay rent if he takes care of the landlord's granddaughter, which he immediately accepted. However, that granddaughter, Mako, ended up being a 20 year old college student who is completely incapable of taking care of herself. Even so, it was love at first sight for Rin, and he's been taking care of her ever since.

A mysterious mansion has towered proudly over the Tokyo district of Numanakarai since the Taisho period. Those who enter either never escape, or leave having experienced horrors untold, and with the desire to take revenge.

Girls and sweets are full of secrets!?

Ichise Souma is a high school student who dreams of becoming a pastry chef and devotes himself to making sweets. He meets Satomi Chika, a female classmate, after receiving some sweets.

Chika is a beautiful girl with a soothing personality, known at school as the “Angel of Peace.” Souma thought she was a good girl who would kindly listen to his worries about making sweets, but...

"Ichise-san, your embarrassed face is really cute."

Chika shows an unexpected side of herself only when they are alone, and Souma’s heart is on the verge of exploding! A sweet and stimulating boy-meets-girl story with a mischievous angel connected by sweets begins!

In the year 1947, the people of Shinjuku are down on their luck. With little money to buy food or necessities, some resort to gambling in order to survive. Traveling Tetsuya chooses to spend his time at Mahjong parlors where he is wiping the floor clean with his adversaries. However, Tetsuya meets the intensely-skilled Boushu-san, this is when he realizes that his skills are still lacking.

Note: Won the 2000 Kodansha Manga Award for shounen.

The return of the famous teen detective, Kindaichi Hajime. With his keen intellect and sharp wits, there is no case he cannot solve, in the name of his grandfather!

Yuuta Sato accidentally discovers that childhood friend Rinko Uenohara contracted a very rare illness called the "Kissing Disease". The disease forces the person to kiss someone of the opposite sex at regular intervals or die! Yuuta decides that he is going to keep her alive no matter what. Will he succeed? What will the others think when they find out about the two!?

High school student, Kawasemi, who has transferred to the countryside, spends her days alone due to her shyness. One day, she is approached by her classmate Misago, a so-called 'countryside Yankee', and was taken to the mountains. Kawasemi was afraid of what she would do, but then MIsago starts fishing!? A Cooking lover JK Meets Fishing lover JK's outdoor life manga!