Meet the Executive Committee of Araiso Private High School: a group of five students whose motto is “Ridiculing the weak and bullying the strong.” At the heart of the committee are Kubota Makoto and Tokito Minoru, two bad boys who take care of any trouble at the school in unique (and often violent) ways.

Note: Though this is considered an alternate story to Wild Adapter, with which it shares both protagonists' names and basic personality traits, there are little to no similarities in plot and Araiso has a far more upbeat tone.

Hina has repeatedly transferred schools due to her father's job, and has always dreamed of a normal high-school life. At her new school, however, she finds that her class is comprised solely of guys! On top of that, five mischievous boys from her class have taken a liking to her...!?

From Imangascans:
The sweet and the sour of a first love! Boy or girl, everyone is looking forward to that first encounter. No words can describe the nervousness and excitement felt at that destined moment! Perhaps the story of your first love, too, is collected in the First Love MALISA series. Malisa Lin's new work is filled with delicate artwork, elaborate drama, rich laugh-out-loud moments, and perfect endings. This series tells stories of "falling in love"...

Hitomi Miku goes to live in a mysterious house, where she meets Rauto, the young and sexy master of the house. There, she discovers that the house is full of monsters! Rauto gives her a special necklace, and she suddenly transforms and knocks out an evil monster who had possessed a girl! What's going on? Becoming Rauto's maid and fiancé? "I'll knock out everyone's heart."

Includes the Hoshi no - W - Oujisama story in vol. 2.

From Korean-Manhwa: A story about the progression in the lives of Shimun and Shi Un Lee, brother and sister; and their trials of sadness, love and friendships.

Collection of short stories by Maruo, includes The Golden Notebook (Kin no Techou), Farewell Showa, and Poison Strawberry.

In the future, the world is managed by a network called the Fractale System. A boy named Crane is living an aimless life with his parents, who are actually computer-generated "Doppels". One day, he runs into a pretty girl named Furyune, who is being pursued by someone. When he rescues her and helps to keep her hidden from her pursuers, he is pulled into her troubles as well. After meeting her, his life will never be the same!

After getting hit by the flush handle of a toilet, Agueda "Agu" starts seeing weird creatures that resemble various things.

A lonely girl finds a devil doll on a rainy night. What will happen?

A mixture of off-the-wall family comedy and bittersweet love story, For the Mermaid Princess is the story of a girl with a gentle manhwaga father, a whip-wielding nutjob of a mother, and four older sisters.
When her family moves to a new house, Lee Suelbi discovers just how difficult it can be to balance family, friendships, and love.

Okama shall teach you the nutritious value of girls and food!

From Chinatown KM:
Chapter 01 - Aiqing Wasaibi (Side Story/Oneshot)

Chapter 02-04 Flying Free
A story about a girl who has always studied hard in school and has never broken rules. However, she has never tasted what true freedom is.

Chapter 05 - Another side story/oneshot.

Through a husband and wife's bickering, everyday life, we can see into their minds and understand why people act the way they do.

When Ryou moves into a new apartment block, his neighbour Makoto makes no secret of the fact that he likes men, and Ryou is forced to confront the secret doubts he's always had about his own sexuality. Things get complicated when Makoto's history with the other resident of the building, Nanno, results in jealousy, tension, and love triangles all around.

From Evil Flowers:

A very poor high school girl finds a very rare brand dog on her way home. Grateful for her help the dog’s owner gives her a huge house as an award, but, in order to have it she must continue to take care of Gold, the dog that she found. Will the money be worth it?

Basically, it's a retanking of some chapters from Full Metal Panic!. It's sort of like FMP! Fumoffu.. meaning that there's no mecha plotline, only short stories. Also there's an extra story not presented anywhere in each volume of this series.

One day, a ronin student on his way home gave a bentou to a cosplay cat girl. Unexpectedly, the cat girl then decided to stay at his house, resulting in the two living together. But then, the girl turns out to be one of the mountain shrine's Gods…

Having to deal with the girl’s magic plus the teasing from other cats and Gods keeps the main character’s hands absolutely full. Will he ever get a break or will this “big pet” burden him forever?

Three quarters of the world is the world of the dead. The world has been invaded by phantoms. One day, a boy named Nagi finds in the mountains of scrap wood a mechanical teenage maid girl. He immediately takes her home to repair her. The first things that Elise, this mysterious mechanical maid, says is, "Good morning, Nagi." Who is this mysterious silver haired girl? The fate of the world rests in their hands.

In the Fuhoni! (Unwilling!) series:

V.1 - Fuhoni!
Hikawa Chihiro had always been a flirt until he met his match, Jyounouchi Haruhisa. Being the older one, he wanted to change the fact that he was the one being held. While having internal conflict, the appearance of a new younger rival, Koide, made Hikawa realized he had to be honest with himself or to risk losing Jyounouchi. What would he do?

V.2 - Ran
The continuation of Hikawa and Jyounouchi. What happened when Jyounouchi nii-san tried to break them up? When Hikawa found that Jyounouchi's new neighbor, Toba Kouhei, was his ex-classmate, he refused to go to Jyounouchi's place again. Toba asked Hikawa to join him as his business partner. What would Hikawa do?

V.3 - Goku

Miyano Amata, known as the "Perfect Prince" for his intelligence, looks, and cool personality, is asked to substitute for his sister as an attendant at a doujinshi convention disguised as a loligothic girl. There he meets a girl from his class and they become friends, but he must crossdress in order to be with the girl while learning about the fujoshi fandom.

Notes:

? Fudanshi = BL fanboys: Some may be gay, some may be straight. More info can be found here.

? Fujoshi = (Literally) Rotten girl: A pejorative Japanese term for female fans of manga and novels that feature romantic relationships between men, often with the implication of yaoi concept.