A collection of stories:

1-2) The Land of Dreams in My Darling
Shiro is lovingly taking care of his long-time crush Shohei, an aspiring ero-writer. Shohei has not changed at all since high school, when he was regarded as "The most disgusting man of the year", but for mysterious reasons his image in girl's eyes changed totally after he had entered university. Shiro's word crumbles when he catches Shohei using sex service.

3-5.5) Reaching the Deepest Place
A disillusioned P.E. Teacher, when patrolling streets, meets an intriguing younger guy. The problem is sensei gets easily drunk and ...

6) Hands in the dark held such warmth
A Yakuza and a Host.

I'm there again. That town in my dreams. There is a boy here that I know, that I've met in that town in my dreams.

In a certain village, in a certain cave, lies a young girl that has been sacrificed. A certain mysterious man comes to her rescue...

Another series based in the original world of Yurara no Tsuki.

A 1-volume long manga containing various ridiculous and twisted stories.

1. Head Prolapse Elegy

2. White String

3. Mr. Urashima

4. Dream Toy Factory

5. Drafting a Water Goddess
A story about a village which has a twisted festival - they race bloated corpses (called water goddess) down the stream. And one day, a woman finds out she is to be the water goddess...

6. Closed Hospital
The adventures of the citizens of a hospital that's become its own country.

7. The How and What of Excretion in the Future

8. The How and What of Future Sports

9. The How and What of a Space War

10. The How and What of Earthquakes and Volcanoes

11. Tale of Reversed Oddity

12. Sweet Fashion Notes

13. White Teeth are Nice

Yume no Shiro is a one volume work by Masami Tsuda and consists of 3 short stories, that were drawn while Kare Kano was still running.
It's all about love couples. Also, there is a thread running through all three stories. That's a magician who helps the people. Who are the people he helps?

1) Inside the Forest
Sana loves the forest and is friends with the animals. However she is a noble's daughter that has been recently requested to be a concubine for a king due to the death of his previous concubine. Unwilling, she becomes his concubine, however she seems to have fallen in love, but he only loves his dead wife...

2) I'm a Mermaid
The island priestess discovers a golden-hair, blue eyed man that seems to be an enemy. However both fall in love...

3) The Castle of Dreams
Lord Lafense has enough of his life and decided to commit suicide by jumping off the castle wall, but it seems that his faithful servant Chita is dragged along with him. However, when they woke up, they found freedom in a dream-like castle. Are they really in the afterlife as they thought or is it something more..magical?

The main character, Kaede Futami, has a premonition that her childhood friend, Ryo Ichimiya, who she has feelings for, will confess his love to her on the day of the fireworks display coming up in two weeks. However, she can't be honest in front of him and behaves carelessly, which makes it difficult for him to get closer to her. And if the dream doesn't come true, she will lose her precognitive powers. Will she be able to go to the fireworks display with him and confess her love as she dreamed?

Based on the web novel that inspired the popular song あの夢をなぞって (ano yume wo nazotte) by YOASOBI.

From Friendship Scans:

Beginning of 16th century, Alexandra was captured by slave traders in Ukraine during one of their many raids. When the traders arrived in Greece to sell the female slaves, a young handsome man named Mateus bought her and promised to give her true freedom. He hired countless teachers, scholars, and palace ladies to train her into the one perfect woman of her time.

Mateus's kindness has caused Alexandra to deeply fall in love with him, and she secretly wishes to be his concubine. But cruel fate! Mateus has already promised her to his best friend, who is Suleiman the Great, Emperor of the Ottoman Empire! Mateus promised Alexandra of true freedom, but where is freedom when she is in another man's harem and can only look at the one she loves from afar?

Not willing to endure this agony, Alexandra promises herself that one day, she will free both of them from their bird cages. But Mateus is the Grand Vizier, a power only second to the Emperor himself. So Alexandra must become the most influential concubine in order to have any hope—which also means bearing Suleiman's son. However, Suleiman already has a son by another concubine, and this woman is determined to keep her son as the only prince and only heir.

Thus begins the story of a slave that becomes the story of one of the greatest empresses of all time, Alexandra, the woman who would one day be known as Roxolana, Empress of the Ottoman Empire.

A girl falls into a coma and finds herself at an unusual "convenience store" managed by a talking dog. In the land where dreams are made, suspended somewhere between life and death, she watches and learns from the various souls she encounters.

Ailey, the selfish daughter of a multibillionaire, "buys" Marty - her favorite rockstar - in an intergalatical society and essentially forbids him from leaving her private planet, no matter how much he tries to leave. But as time goes on, Marty continues to resist, and she must either kill him or let him go.

Kanou is in love with one of his employees, the handsome Sawamura, who is really nice and popular. But Kanou is used to having bad luck in love, so he decides to hold back his feelings... But during a drunken night, events take a surprising turn... And Kanou realizes that the Sawamura he imagined, may be very different from reality...

Three intertwined stories centered around dreams. The first is about the Gilgamesh Epic, the second and third take metaphors and characters from the epic and place them in a different setting.

Four spicy stories about lovers, who struggle with their very strong feelings, starting from a confession...

1. Yume Touka End Roll
2-4. Coyote Hita Hita Hita Kousagi Niya Niya Niya Watashitachi Fura Fura Fura Anata dake Niya Niya Niya
5. Kimi Shigure
6. Kimishigure

From Kodanclub:
An ordinary, quiet town is shaken by a series of bizarre happenings brought about by the darkness in human hearts. There are no solutions in the real world: Only "Dream Messengers" can find the answers. Dream messengers connect the fabulous with the real and control the power of dreams. Their leader, Toko Mishima, works with 8 other messengers using the powers given by an old spell and a toy made by Toko's father. Toko, her younger sister Rinko, Hajime Tachibana, who loves young girls, and the six other Dream Messengers are given the names of days or stars - Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Raff, and Keito.

Kawamura Kazuya had dreamt of being a pilot when he was young. Thus when he heard that there's an aviation school five hours from where he stayed, Kawamura enrolled without giving much thought. He was placed in the same room with two other room mates. One of them, Itou, dropped out when he couldn't stand the tough life. This left Kawamura with Yoshitake, a tall, quiet and non-responsive guy.

Darling Darling (ダーリン・ダーリン); Tsubomi Vol.6, 7 (2010)
About the sort of problems that arise in a relationship when one partner has a well-paying, high-stress job and the other doesn't. In the first half, the protagonist feels like her girlfriend is neglecting her. In the second half, the protagonist thinks about what she can do to help her girlfriend.

Yume yori Suteki na (ゆめよりすてきな); Vol.8 (2010/10)
Anata no Mono (あなたのもの); Vol.10 (2011/2)
Ibunka yori Ai wo Komete (異文化より愛をこめて); Vol.12 (2011/6)
Monologue Love (モノローグ・ラブ); Vol.13 (2011/8)
Romance Cord (ロマンス・コード); kakioroshi
Girls' Talk (ガールズトーク); kakioroshi

Included in the Motto Musunde, Hiraite Hayaku tankoubon release.

From Hoshi Kuzuu:
1-7) Yume Yume Shinjuu
For someone who has no recollection of their childhood, Yuzuru's been having the same dream over and over again. One where he and another boy are playing in a small shrine. But he can never figure out who the other boy is. Then one day, his brother Ryosuke brings home a classmate of his, named Takumi. Within the memories that Yuzura can not remember, he realizes that Takumi was his childhood friend and first love. Takumi reveals that he is ecstatic that Yuzuru remembers. Happy to meet his first love again, Yuzuru once again becomes attracted to him, but...

8) Hitsuji no Rakuen: Unscanlated

Yume Yume * You You is about Kagura Yume, a girl with a twin sister who hogs the spotlight. Yume feels inferior to her sister since she's smarter, prettier, and more popular than her. One day, while slacking off on her studies, Yume discovers a mysterious mirror that releases people from other worlds into hers! Yume must transform into a miko and save both worlds!

From manganews.net:

Milk, the heroine, finds a magical puppy named Fanta. With Fanta's help, she pursues her crush, Ale, through various adventures and problems.

Gay girls and Onsen.