From Viz:

Shy Chise and nervous Shuji are high school seniors in a small town and have just started dating. But everything changes when Shuji discovers that Chise has been engineered by the Japanese Self Defense Force to transform into the Ultimate Weapon! Soon Chise is torn between realizing her potential as a devastating fighting force and her desire to share a bowl of ramen with her new boyfriend!

On the eve of her sixteenth birthday, Kozue Hiyoki is visited in her dreams by a man who steals her heart- literally! Determined to find him and retrieve her stolen heart, Hiyoki, with the color of the man’s hair and the tattoo on his chest as her only leads, enrolls in the S-Hall dormitories of St. Nazareth Academy, but quickly realizes that its residents are not at all like she expected… For starters, they’re all guys! There, Hiyoki soon discovers that she has the ability to look inside her dorm-mates’ dreams, which may be the key to uncovering the identity of the thief who stole her heart…. But perhaps her biggest challenge is that most of the guys won’t let Hiyoki into their rooms, much less their hearts!

1. Kiss Yori mo Ijiwaru
Miku is admitted to enter an extremely prestigious school, where only elite students are studying, as a transfer student. Her only good point is that she's cheerful and enthusiastic. She's pleased to enter the school because it is a boarding school and the tuition is free. However, Omi, an elite but spiteful student, tells her to quit school. Miku is put in a tricky position, and accepts his challenge to a fight.

2. Sensei, Onnanoko ni Shite (Teacher, Please Turn Me into a Girl!)

3. Scandal Nante Iwasenai (Not a Scandal)
Yuuri is a total fan of the top idol Shibuki. Then during his concert, she gets an unique chance that any fan would dream of.

4. Yubisaki kara Hajimaru Furachi (The Evil Prince)
Keita, a hairstylist and a former gangster, suddenly asks Arimori Tsukasa to be his model after seeing her beautiful hair, but a street flirt comes and Keita saves her. They gradually become friends, but will there be something more?

Shen Sheng has always been obedient and never once deviated from the life course set for him by others. Everything changes when Cheng Mu, a literature professor, comes into his life. By accident, he discovers the young professor's secret. At the same time, the professor also finds out about Shen Sheng's unique talent. Their lives will never be the same again.

1) Reason for Goodbye
Students Yukihisa and Akira were dating secretly until Yukihisa's parents discovered them. They don't speak anymore, and now Yukihisa's family is moving. Is there anything left for them?

2) Snow Snow Melody
Mutsuki wants to be songwriter, but he's only a clumsy intern working at a television station. When the most beautiful guy he's ever seen insults him, Mutsuki hits him in the face with a dust rag! But that guy is Kyoya, a singer in a popular band, and he's taken a liking to Mutsuki.

3) Don't Worry Baby
Takaya has a crush on his classmate Wataru, but Wataru only thinks of his younger brother Tsutomo. When Takaya decides to meet his competition, Wataru gets angry. Can these guys ever sort out their feelings?

4) Difficult Love Journey
Shouhei is in love with his classmate Wataru. But Wataru won't listen to his confession! He says he'll only hear Shouhei out if he can beat his test scores. Will Shouhei ever win?

Masaki doesn’t understand the feelings that are accumulating inside him. When he realizes them, it is too late---his best friend has moved. In the ice cold snow, he weeps and remembers his best friend’s words.

From Midnight Scans:

Story 1: Sayonara Demo Aishiteru - Yutaka's version
Yutaka has decided to confess to Mariya, the girl who saved him during the entrance examination. Being an average girl, Mariya was bewildered by the confession of the charming Yutaka. Even though there are strains in their relationship, the distance between the two slowly shortens. However, Mariya has suddenly asked for a breakup!

Story 2: Sayonara Demo Aishiteru - Mariya's version

Story 3: 1% No Kiseki
Nana falls for her rumored cold teacher.

Story 4: Sumetaku, Amaku, Koi O Shite
Rinka has always been perceived as a cold girl and is popular with the freshman boys, until that is they found out about her true personality. There is yet another freshman that proclaims that he fallen in love with her at first sight, but she gave him a blunt reply as she have given many others. However it seems that he has not been shaken by her reply, how will Rinka react?

In 18th century England, Gabriel, an orphan girl from a fallen noble family befriended a young man named Jeremy, who was rumored to be an illegitimate child of a nobleman. After an incident occurred, resulting in his tragic death, Gabriel must impersonate her friend Jeremy, taking his place at an all boys academy for nobles, a place that may seem like heaven to others, but really hides a harshness which she would never have imagined.

Follows two boys with disabilities, Onishi Yuu and Ishida Kenji, as they deal with the trials and tribulations of high school life.

From Shoujo Manga Maniac: In Korea, the deer is considered as the symbol of purity and innocence. Ria wishes she were a deer... Torn between her love for her protective brother and her desire to fend for herself, she'll need to learn how to make her own choices, as well as her brother will. Not only Rin meets a girl who falls head over heels for him, but he also starts to feel growing an odd interest in guys... Saseum is a moving story about the everyday life of teens in Korea, a beautiful story of love and human feelings.

From Chibi Manga:

1) Jun'ai Twitter
Reona gets into Twitter. Today, she looks at her beloved Tokuda-senpai again, while Mori-senpai worries as usual...
At that time, her followers increase and... and that, no way, that's Tokuda-senpai!?
And when she thinks she can now get all ...♥ with Tokuda-senpai without any hindrances, Mori-senpai is unusually nice. And Reona, who Mori-senpai is worrying about...!?

2) Onna no ko wa mainichi tatakatteiru

3) Nigai atashi to amai kimi

4) Ashita, Kimi to koi shiteru

Original Webcomic

Volume 1: Chapters 1-2: Being the notorious school president of Seiryou Academy, Hashizume had control over every student and staff member. But when the transfer student Misonoi appears with his nonchalant and unassuming attitude, Hashizume sees his newest challenge in taming this new toy.

Chapters 3-4: A story about cousins who fall in love.

Chapter 5: Oneshot about professor/student relationship.

The Series Goes Like This:

Volume 1: Seiryou Saikyou Monogatari (Scandalous Seiryo University)

Volume 2: Seiryou Saikyou Monogatari Returns (Return To Scandalous Seiryo University)

Volume 3: Seiryou Saikyou Monogatari Limited (Beyond Scandalous Seiryo University)

Volume 4: Seiryou Saikyou Monogatari - Yano x Ishida Hen
- Serenade

From SAKURA Chitose Fan Page:
While running to her new school in the morning of her first day, Marimo has an encounter with three guys from her school, that leave her a strange pack. Later on, in her class, the three guys appear again and kidnap her! Marimo is very scared until she realizes that they want the pack again... as it happens, they are the members of one of the school clubs... a club dedicated enterely to Kero-chans and their merchandise! (These are that typical cute Japanese green frog....) Marimo enters the club and starts to fall for the leader, but this, of course, is only the start of the fun....

Oba Tamako tells of her time being at art high school.

1-4) Suzuhara Jan is a new college student determined to devote himself to his studies. But a chance meeting with handsome professor Aoyama and discovery of the "Game to Win the Professor's Heart" become a distraction. Though he can't seem to stay away from Aoyama, the game may be impossible to win...

5) Takashi Namasami is wandering lost in the woods when he's found by young master Wakamiya Hideto. But the pushy youngster has a requirement for rescue: Takashi has to be his pretend lover!

The baseball club has only two members. These two guys are at their wits' end, fearing that their club will soon be disbanded. Enter a weird girl who claims to be the "No.1 High School Baseball Manager". Her goal?
To get to "The Land of Baby Cows" - or as a more sane person would put it - Koushien!

From Blissful Sin:

1-2) Scarlet
College student Akio is dating his beautiful classmate, Ryou. Unable to stand the slightest loneliness, Ryou accepts any girl who approaches him. One day, Ryou introduces Akio to a girl he is thinking of marrying which makes Akio decide to completely break it off with Ryou. Instead, a heart wrenching love story takes stage!

3-4) One Night Stand
During the day Harumi is just a normal businessman but when night comes he changes into a different person.

5) My Lover
Keito wonders why he is still in a relationship with the overly depressive Naoki

Midori is a high-school-aged lesbian who has just been rejected, driving away one of her few friends. In the world right now, there are creatures called "Extraneous" that appear out of nowhere, kill people, and disappear again. No one remembers when they started appearing, but the chance of being killed by one is about the same as the chance of dying in a car accident. Midori's mother was killed by one a year ago, and not only is her father rarely around, he's also deeply in debt. She gets attacked by an Extraneous on her way home, but is saved by a mysterious girl who claims that she's a god. Midori names her Hitsuji (sheep) because of her horns, and takes the girl in. They start a website, Hitsujiya, an Extraneous-fighting service provided by Hitsuji.

From Midnight Scans:

Sensei, the person whom I long for, whom I wait for, whom I love, and whom I want to be with. At night, I always think about you, Sensei. You are similar to me, but you have a completely different personality. The moment I fell in love with him, school has become a different kind of place because of him. The love between me and Sensei has begun to grow.

Includes the oneshot, Fake Letter.