From An Endless Story:

After the death of her father, Sakura decides to follow her father's last wishes and move into Sakura Dormitory and attend Sakura High. However, on her way there, she's approached by a stranger who mistakens her for someone else and steals her first kiss!

From Blissful Sin:

1) Beyond a Kiss is...

2) Sailor Danshi
Seeing a friend dressed up in a sailor uniform at a drinking party, his heartbeat immediately speeds up and his crotch starts throbbing! To find out why, he takes his friend to a love hotel and...? The arousing sailor uniform clinging to a muscular body, bondage brothers, oyaji harassment, sex on the beach and much, much more - all in this fully-loaded novel!

3) Pure-Heart Lies

4) Absolute Love Tyrant

5) Hyper Ocean Love Story

6) The Daily Life of a Dog

7) Infinite Affection

7.5) Extra and Afterword

From Nagareboshi Manga:

The student council is full of strange, quirky people with clashing personalities. One person in particular, Tsubaki Kiyoi (nicknamed Tsubakiyo), has a special talent that only one other person knows about-- when she touches someone, she can access their thoughts and memories. But because of this talent, she is very introverted and damaged inside. Can she overcome her fear of coming in contact with other humans, and take control of her power?

1) Saikou no Kimi
All begins when Soga Naoaki went to complain to the president of the student counsil, Yoshizumi Sekai, about the reducing of his volleyball team's bookings. By coincidence, Naoaki becomes the vice-president of the student counsil because of the health of the current one. He and Sekai don't get along, but what happens when they have to organise the school festival? Also found in Koibito no Namae

2) Kimi to Boku no Itsu Pobun
Oneshot also found in Renai Jikaku Shoujou.

3)Kimi ni Ai ni
Oneshot also found in Takaramono.

4) Afterword

Ikewaki Gajirou, nicknamed Gacchan, is the most valorous of the Big 5 in his school. He's a pretty good person. However, he has one flaw that people fear him for...

In search of her mother Nagi, a girl from a desolate country village, comes to a big city and enters Swimming Suieikyou High School. Shortly after joining the swimming club, Nagi finds out that the pool is actually completely overtaken by boys! But in this never-practicing so-called swimming club Nagi finds something...

The story revolves around Tsukune Aono, a boy who accidentally gets enrolled in a school inhabited by monsters and demons. He quickly befriends Moka Akashiya, a vampire who soon develops an obsession with his blood, and later meets other girls who soon take a romantic liking to him.

The story revolves around Wakame High School's extracurricular club, "Sexy Commando Club," which consists of 5-6 male members (one being the high school principal himself), a female manager, and a small mysterious pet (that may be extraterrestrial in origin). The strange and ancient art of Sexy Commando (the roots of which extend back into Japan's Muromachi period) is a martial one; however, instead of focusing on how to defeat an opponent with punches, kicks, or grappling, it focuses on how to distract the opponent. The logic follows that any distracted opponent is unable to fight, and therefore the art of Sexy Commando trumps any other form of martial arts. There are as many techniques as there are ways to distract, though Wakame High School's Sexy Command Club tends to employ the unzipping of the trousers (Elize no Yuutsu).

From ShoujoMagic:

All Kumiko wants is to become a teacher; however her father is dead set against it. He is giving her one chance to prove herself as a teacher before forbidding her from pursuing this career forever. Meet her newest student, Ryu-kun. He has NO desire to LEARN anything from his tutors, rather he is an expert at teaching THEM about...SEX?!

Note: The story was originally released as a single short story, but it later became a series.

All of the girls at his college love Suou Tsukasa and come up to talk to him on a daily basis. Unfortunately for them, Tsukasa hates girls that are straightforward like that, but is too nice of a guy to tell them that.

In fact, he has a crush on Kizaki Megumu, his classmate and one of the shy and least talkative girls. The professor in one of the classes they have together is Dr. Hime, a young teacher whose childish looks and short height makes her a target for her students to jokingly tease and treat her more like their friend rather than a professor.

After taking home the drunk Dr. Hime, who was served lots of alcohol by her students, Tsukasa learns a giant secret about her love life.

From Attractive Fascinante: Sensei rejected Fuji when Fuji confessed to him on graduation day. After that, Fuji always visited sensei and they still went out together. Sensei realized his feelings gradually and hoped to start afresh with Fuji. However, Fuji couldn’t believe it. But when Sensei’s ex-lover, Namiki, came back and wanted to reconcile with Sensei, both Sensei and Fuji found that they could no longer hide their own feelings anymore.

1-2) Sensei to Himitsu
Kaji's woken up from his nap hearing popular Tsunoda-sensei getting hot and heavy with another guy! But it's his partner, the plain Aritou-sensei that Kaji can't stop thinking about. Kaji's eyes are being opened as he finds that the needs and dark desires that can bind together lovers aren't always about love...

3-6) Hold me for all of Time
A researcher, Sawatari Kaoru, runs off after finding out that there will be no more funding for his research. As he wanders around he sees an abandoned warehouse where he could use to continue his research with his remaining savings. As he walks inside the building, he meets an arrogant little boy. Surprise ensues as to the boys identity, and the unexpected result of his own research...

Extra) And then...
Continuation of ch.1-2, a little into their future.

[From Beautiful Soup]:

"Self Portrait" is the story of a boy dating a yaoi fangirl who puts him up in a bet with an older, homosexual photographer (And he obviously loses). Hilarity and shounen-ai ensue.

DMG via Renta!

As a transfer student to a rough, run-down school populated by delinquents, Shindou tries his best to make friends. When he meets the ill-mannered Yousuke, heartbeats and tempers start to fly! It seems Yousuke is a "tsundere"--his gruff exterior hides a shy, sensitive side--and Shindou immediately finds himself dizzy over his combative new crush. Can Yousuke accept a relationship that goes against his tough-guy image? Or will his tendency to lash out at everyone around him drive even the earnest Shindou away for good?

From Viz:
Hime Kino's dream is to one day perform voice acting like her hero, Sakura Aoyama, from the Lovely Blazer anime. So getting accepted to the prestigious Hiragi Academy's voice actor department is the first step in the right direction! But on her first day of class she meets Sakura's grouchy son, Senri, who tells Hime that her voice is awful and Lovely Blazers is stupid. Hime will not let that stand unchallenged. She'll show everyone that she IS a voice-acting princess, whether they like it or not!!

Nagisa and her beautiful, intelligent best friend Yumi couldn’t be more different. Of course, her childhood friend, Ryou, is always happy to point this out whenever he can. When Yumi gets a crush on the equally intelligent and handsome Kei, Nagisa is determined to get the two of them together like any good best friend would, but it seems that Kei likes Nagisa’s outgoing personality more than Yumi’s shy one. And where does Ryou’s crush on Nagisa–and the one she may have on him–fit into all of this?

Shiina Momose doesn't believe in fortune telling and the occult, but for some reason, she can destroy anything with a touch. One day while on her way to school, a young man approaches her and claims to be a God. Furthermore, he believes that he was guided towards her and for that reason he has become convinced that she should become his first follower! Naturally, Momose refuses; but when strange things began to happen... she can not do something about it!

Talentless, shy Tsubasa has just been accepted into the prestigious Seiko Academy. He soon gets mixed up with the most popular kids in school -- and the entertainment world! Forced to join the pop idol group RINX as their lead FEMALE singer, Tsubasa soon finds himself stuck in the middle of a cross-dressing comedy full of mistaken identities, blackmail, and kidnapping!

Tachibana doesn't have it easy. His lover, Sawada, just doesn't care who sees them kissing! Tachibana doesn't want people judging them, while Sawada just wants to show his love when he feels it. Will everyone find out what kind of love they have?

(From Tranquil Spring) A comedy version of Simoun.