The main character is having an affair with her piano teacher. One day, she finds another student's earring in her teacher's bed, and realizes she might not be the only one getting extra lessons...

From ShoujoMagic:

Hatori is a tall girl who's easily mistaken for a boy, and she's in love with her childhood friend, Keishi. Even though he's a boy, Keishi is so cute that Hatori just wants to push him down and make him her own. Hatori has countless delusions and hallucinations (unbefitting a young lady) running wildly through her head every day -- and they're all about Keishi. They set her heart pounding and her nose bleeding!

11 years ago, Eun Sung-min was one of the few survivors from a village that experienced the "Evil Phenomenon". He and his maid were saved by the mysterious Phantom King and his group, Phantom. Now the Special Environmental Protection Agency is searching for the answers to what happened on that fateful day, and how to combat the "Evil Spirits" that caused such mayhem.

By Dredshi Scans
Prologue (From Volume 1):
The great 'incident' of Yong-Ah city has made the whole world acknowledge the 'Evil Phenomenon' as a disaster and the enemy of humanity. 11 years later, the survivors have reconstructed Yong-Ah city, overcoming the horrible incident and finally leading a peaceful life.

Eun Sung Min, living with only the family maid, is one of those survivors. But there was a faint memory that resurfaced through that painful memory... "Phantom King"; and, a stranger who appeared one day, Choi Seung Cheol, explaining the dangers of the new 'Evil'. He convinces Sung Min to fight the covered truth about 'Evil'.

What choice will Sung Min make in the face of this upcoming danger....?

After ending an on-again, off-again relationship of 10 years, Minsuk decides to foster a Siberian husky named Bexan to mark the start of his new single life. He can’t wait to cuddle with his new furry roommate, take him on walks, and play fetch. But Bexan is no ordinary dog...and when night falls, Minsuk is in for a surprise.

A spate of mafia assasinations occurs in America, the work of the mysterious organization named Inferno. "Phantom" is their most strongest and capable assassin, however a lone tourist witnesses Phantom's latest act of murder. He unwittingly exposes the top assassin's true identity, a young girl named Ein. Witnesses are usually killed, but the man is captured and taken to be brainwashed into "Zwei", Inferno's newest assassin, with no memory of who he is. From this point on, Zwei is drawn into a world of conspiracy, deceit, and violence.

One day a young woman sees the man of her dreams.

A special booklet that came with Yuri Hime 11. Most are mini-sequels to stories from Yuri Hime, Yuri Hime S, and Yuri Hime Wildrose...

A girl harboring feelings for her childhood friend receives some help from little balls of fluff... For better or for worse.

Special booklet that came in Yurihime 12 featuring previews of 2 upcoming books in the Wildrose series, Hanjuku Joshi and Gokujou Drops.

A collection of surrealistic oneshots complemented by the mangaka's unique art style.

When her grandfather gets sick, it's Mei's job to run his French cafe, Petit Four. But can she keep the six beautiful boys who work there from fighting long enough to get anything done?

Raising Your Pet
Hidaka Chikara, 17, goes onto the tv show "Fight Money" and swindles 5 million yen out of Kunimi Tomokazu, who is president of Keinou Productions. Chikara actually gives the money to his friend for his sick sister. But, how will he repay his debt?

My Prince
Hayato's family volunteered to host a foreign exchange student, Edward Farring. A family emergency means Hayato is home alone and It's up to him to meet the guest at the airport and make him comfortable. However, it seems like the handsome Edward is not who he says he is. Who is this princely guy?

Ryuko is a rambunctious little girl who, while caring greatly about fashion, is unable to control her more wild instincts. To the chagrin of her parents, she loves chasing lizards and making a mess.

A collection of short stories:

1. Pet of Love
A young man is living alone, but can't live independently, so his best friend is forced to take care of him.

2. Remote Control
Is basically about two boys, one of whom is playing a game with the other while pretending to help him become popular. But they both slowly realize it's something else entirely.

3. Iron Road of Love
A dreamless 17 year old finds something to live for when he meets a 25-year-old fellow train enthusiast.

4. Drunken Dog Night
Eitoku is a guy that spends his time either working (by finding "customers" for women) or getting drunk and bringing home strange things, and one night he runs into Hajime, and ends up bringing home the most eccentric thing of all.

5. Unforgettable Love
An apprentice hairdresser finds it hard to move on when his sempai leaves the salon to visit England.

In the Gorgeous Takashino Ichizoku:

V.01 - Pet ja Nai!
A young man, Hanabishi Nao who is blessed with the phenomenal capability to sense the coming danger, was employed to work for Takashino Kazusa as a bodyguard, the son of a prosperous family. Nao, however isn't suited for such a job due to his adorable looks. Instead of treating Nao like a defender, Kazusa thinks of making Nao his "pet". But just what kind of "pet" is Nao? Submissive? Domineering?

V.02 - Kiss, ja Nai

V.03 - Hajimete, ja nai!

V.04 - Karada, ja Nai!

V.05 - Tengoku, ja Nai

V.06 - Suki, ja Nai!

V.07 - Futari... ja Nai!

V.08 - Kirei ja Nai!

V.09 - Yoku, ja Nai

V.10 - Kagayaki, ja Nai!

V.11 - Gorgeous, ja Nai

V.12 - Hihou, ja Nai!

The shining lights, the magnificent stage! Friendships created through singing, making a future through dancing, the girls embark on their journey towards their dreams! One who has lost status due to a scandal is hiding a plot behind her back. A pair of bosom friends, separated by fate. A girl who tries to exonerate her mother sets off on her journey for a talent competition. When the stage turns into an empty battlefield, she uses her voice to chase after her dreams.

Ayato Sasami loves to play baseball but he never had the talent for it, on the other hand Kariya Kenshiro, has the talent for baseball, but he couldn't care much about it. The only reason Kenshiro plays baseball is for Aya and one day Aya said that if Kenshiro pitch a perfect game, Aya would give his virginity to him!

When Aina, who does poorly at school, and Shinga, who is at the top of the class make love, and without knowing it, get the sounds they make broadcast live all over school, trouble may just be stirring and dark clouds may just be gathering over them...
Also includes a side-story called Square Situation.

The SKAR virus has infected a handful of adolescents worldwide, giving them superhuman, telekinetic powers along with a death sentence. When the government and the private sector both set out to find a cure for the deadly illness, their humanitarian effort belies an arms race that could set up a whole new balance of power. Enter the young Sam Chance, who finds himself SKAR-positive. The imminent end of his life just might be the beginning of an entirely different world... From comic vet David Hine (X-Men, District X, Spawn: The Armageddon Collection) and global manga artist Hans Steinbach (A Midnight Opera) comes an unflinching look into a future that's closer than we all would like to admit.

Cheerful middle-schooler Miku lives on a mountain farm with her grandpa, where they keep a large number of animals. When Aruga- a senpai at Miku's school- concocts a plan to help some local stray animals that are causing a nuisance, fellow animal lover Miku seems like a natural choice to help out. As the two of them become closer, Miku finds herself falling in love... but will dense Aruga ever figure it out?