The protagonist is sucked in to a weird whirlpool in a river and somehow ends up in a island in another world with native elves that wear leaf clothes, have the knowledge of an new born, and have sex like rabbits. That also have a body as weak as butter.
He decides to become the king of the place and rule with an iron fist and teach the naive elves cruelty, evil and watch as they kill each other.

Young Gabriel Woods is about to discover that his dreams for an adventurous life will lead to something unimaginable. The door to the realm of the oldest race in the universe, GODS, is finally open to humans. From the mysterious dream eaters of hell to the legendary ocean realm of the sirens, the vast mysterious universe lay before him to explore, but Gabe must first prepare. Welcome all to the GRAND ACADEMY of OURANIA for GODS, where you will learn how to truly become a GOD. Is Gabe ready to face the powerful GODS of the new age, or will he regret wishing for more?

A manga anthology based on the DMM Games/Nitroplus browser game Touken Ranbu -ONLINE-.

Blood, war, and betrayal: this is the story of the Scarlet Macaw, leader of an organization devoted to crushing political threats on the Mervellian continent, a part of the Crimson World.However, the Crimson World is becoming darker than ever...http://tapastic.com/episode/81638

Jung Yoon-hwan may be an orphan but he was a college student who was focusing hard on his studies, one day he is brought to a mysterious "White room" to fight even when he does not want to. Every time he defeats these monsters he gains psychic power, magic, and items beyond his imaginations....

(Source: Game of Scanlation)

The sky has constellations, and humans have teeth. The earth has hills, and humans have little things.

First year high-school student, Toujo Basara, is now living with two beautiful step-sisters thanks to his eccentric dad. But Mio is actually the new Demon Lord and Maria's her succubus chaimberlain. Throw in a "reversed contract," rival demon tribes, and the ecchi situations mainly brought on by Maria for good measure, and you have a situation where Basara's life will never be the same. This seinen adaptation of the light novel mostly focuses on the said latter ecchi situations that occurs between the three main characters.

On Yumika's 14th summer, a strange encounter gives her a new lease on life..

Siscon. Power-phobia. Son of the great General Luccafort. Son of a general. Wether-crown. Fourth-in-line for succession. The titles, accolades, expectations, respect, and envy for DX Luccafort keeps coming. But all he wanted to do was win Marion's hand.
Landreaall follows DX, his sister Ion, and his bodyguard/brother Rokkou as they leave their home in the countryside and brace themselves to take on whatever their famous last name brings them.

A six chapter mini-series by Miura Kentarou set 100 million years in the future, it's about an epic war between the forces led by Zeus and the nether forces led by the giant Alcyoneus.

From MangaHelpers:

In a strange twist on Arthurian legend, young Art pulls the magical sword Excalibur out of a stone--only to find himself as one of a million Arthurs, fighting to defend the island of Britain from enemies and to earn the rank of the true king. Art is pretty puny, but his childhood friend Ligu (who was also chosen by an Excalibur) tries to keep him from being immediately killed.

Soon Art lives in a castle with knights, which are created beings who serve the kings. From the respect with which he treats the knights, he inspires some to hope he becomes the true king. But is that really achievable by a scrawny crybaby like him? [tethysdust]

In ancient times, all of the demons recorded in the Classic of Mountains and Seas really existed. They absorbed humankind's thoughts to become more powerful. As time passed, people gradually forgot about their existence. The demons that were forgotten were all faced with the fate of disappearing...... there is a family that serves to guard and protect the only demon remaining in the world. As they painted and recorded, they were — the artists of the Classic of Mountains and Seas.

The story of Shiba Occhan follows Uncle Shiba, also known as Shiba Occhan, who becomes a doge after marriage.

You may also like:
+ Himouto! Umaru-chan

A collection of oneshots based on fairytale/folklore: 1) Cinderella 2) Little Red Riding Hood 3) The Little Mermaid 4) Beauty and the Beast 5) The Bamboo Princess 6) Carmen

Adapted from the "How I stalked some dude with an exposed nipple and stumbled upon the Zenithian Swordwwww" thread started by an anonymous poster with the ID YDmPhSO2 on 2ch.

Caution: Read this after playing Dragon Quest V for the full experience!

Contains 4 oneshots:

1. Koufuku Dive ｢幸福ダイブ｣

2. Poison Angel ｢ポイズン エンゼル｣

3. Kurogane Girl ｢クロガネ ガール｣

4. Majo Mao! ｢マジョマオ！｣
-taken from Manga Zone Scans
Mao (a witch) comes to the human world in search of a cell phone containing the souls of 1000 demons. In order to find the phone, she enrolls in a high school, where she meets Kento, a boy who refuses to believe in the existence of witches!

* Contains a oneshot called Mirai ni Kiss - Meiko, a 14 year old Robotics genius, travels a hundred years forward in time. However, the future is completely different from her sweet daydreams.

A collection of short stories. Note that the vast majority of these stories contain heterosexual romance themes. A few stories explore transgender issues, but it's a stretch to call them shounen-ai or BL romances. This series demographic is josei.

Le théâtre de A
1.Oeufs D'ange - Tenshi no Tamago
A man is asked by a young painter to be her model.

2. Velvet Going Underground
A doll becomes a super idol. Hijinks ensue.

3. Childhood's End
Alastair runs away and meets the Rabbit.

4. Bite Me Something
Allistaire followed Mr. Rabbit all the way to Wonderland. Will he be able to find him among the crowd?

5. Long Along Alonging
A girl asks a vampire to be his apprentice. But what is her motive?

6. Till Dawn
In a dark tower, a caged voice is singing until a hunted man enters the darkness.

7. Leçon un
Sequel to Long Along Alonging.

8. My Skin on My Back

9. Highland Walker
Sequel to Leçon un.

10. Perfect World
The story of a young wife whose husband is infected with a fatal disease called Flower-Blossomitis.

11. Perfect Lady
Sequel to Perfect World and drawn especially for this book.

12-13. Looks Like a Teaspoon
A boy named Allistaire is often teased at his all-boys school. One night he dresses like a girl and stumbles upon the boy who often bullies him, Simon. Allistaire runs off into a tower and as Simon runs after him, we see the sign "Welcome to Wonderland" hanging by the tower's door.

14. The Pearl Blue Story
Do you believe in mermaids? Coggy, a young boy finds a mysterious lady laying down near the shore of the beach. He brings her home to help her.

15. I Am a Piano
A piano tells the story of her life and the people she encounters.

16. Parade

Le théâtre de B
1. Noël
A short story about a holiday romance.

2. Teddy Bear Satsujin Jiken (The Teddy Bear Murder Case)
Four murders have taken place at an all girl school. Lying beside each of the victim was a teddy bear with one missing limb.

3. Yonshimai Satsujin Jiken

4. A is for Alice
Alastair, a grown man, is off to follow the Rabbit once again to return to Wonderland.

5. Nedai no Musume Atelier no Musume (The Bedroom Girl, The Sculpture Room Girl)
A story about a girl in her death bed finding another chance in life in the body of a doll.

6. B&W (Black&White)
A story about a boy waiting for his sister.

7. Le Jardin du thé (The Tea Garden)
A mysterious story about a poor young man who orders a kind of tea called Huan Ying – “The Illusion”.

8-9. Free Fitting for Her
A priest and his captured vampire must save a naive and selfish young girl from the murderous desires of a Lolicon. But perhaps this girl isn't all that she seems.

10. Rose Dusk, Pale Moon

11. Hello, My Sister

12. The Happy Prince

13. Welcome to Wonderland
Simon, Alastair's old classmate, is now a grown man who bumps into his childhood Wonderland traveller.

[From Storm in Heaven]:

A collection of four touching supernatural short stories.

Chapter one deals with a man born a Midori, a race of humans who turn into trees when they die. Can the man overcome the obstacles facing his race and live a normal life?

Chapter two tells the tale of a young boy who lives in a land of magic. But his first spellbook turns into a pixie when he opens it!

Chapter three is about a young boy forced to abandon his cat when he moves. Upon returning years later, the boy finds himself transported to a strange land full of... cats?

The final story is about a boy who, in exchange for getting off having to pay a speeding fine, agrees to take an experimental drug. The next morning he wakes up with white wings, wings that only seem to get larger every time he does something wrong!