From Intercross:

1. Bokura no Himitsu o Kyouyuu Shiyou ka
Yuka goes to Ikimonogakari's room to ask them to solve her love problem, but unfortunately, they couldn't help her. To make her feel better, the people in the club gives her a piece of candy. Yuka eats it, and she suddenly gets cat ears and a tail! What happened to her? Will she ever go back to normal?

[T/N: Ikimonogakari literally means "(person) in charge of living beings"]

2. Colorful Shounen to Monochrome na Atashi
Naoki and Kiyo have known each other for a long time because they live in the same apartment complex. One Valentine's Day, Kiyo gave Naoki a chocolate cake, but Naoki threw it away and laughed it off. Because of that, Kiyo doesn't make sweets anymore! Because Naoki's dad is Kiyo's dad's boss and they are going on a trip, Kiyo has to make food for Naoki. Will Kiyo re-live the trauma of the past?
(Also included in the Sweets Fortune Telling Anthology as Boy of Macaroon story)

3. Kaibutsu-kun ni Rei
At the Christmas training camp, Yuzuki was paired up with no other than... that guy?!

4. Itoshi no Himeko-chan
Anri, who is usually bad at handling boys, is asked out by the school's most attractive guy, Takuma! This is so she can gradually get used to guys, however, does Takuma have another agenda in play? What is going to happen between the two?

5) Shiro no Kiseki

In the Beast Harem series:

V.1 Rakuen Danshi
Youko is a normal high-school girl attending a not so normal high school. You see Youko's school used to be an all boys school, so after transferring to this school she is the only female in her class, and that surely can cause a few problems! She is being constantly teased by her classmates, especially by Mastsushima Soushi, who she hates the most! But not everything is bad, Youko is in love with Narumiya Kouei, the only one who helped her since she entered the school. But if the one Youko loves is Narumiya, why does she finds it so hard to stay away from Mastsushima, who she 'hates the most'?

- Aka Roze Tenshi

V.2 - Gokujou Rakuen Danshi
Youko and Soushi start dating. However, summer break is approaching, and Youko has to be separated from Soushi. Not if Soushi can help it. he is working with Narumiya to save up for their summer vacation hot spring trip. Yet, shadows are coming to destroy the couple's love. Will this love rival succeed? Or will Youko and Soushi's relationship survive and have their first time?

V.3 Junai Rakuen Danshi
Youko and Soushi are on their lovey-dovey vacation. There, they meet Narumiya and his famous girlfriend. Youko prepares to give her first time to Soushi, but finds it extremely hard due to sharing a bedroom with friends and the pain. Upon seeing Narumiya and his girlfriend together, Youko grows worried. Will Soushi and Youko have their first time at the hot spring? Or will Soushi get tired of Youko's immaturity and end their relationship?

V.4 - Rakuen Danshi - Mujintouhen (Never published)

From Shoujo-Sense:

Ririko has been in the hospital for 10 years. During that time, she was writing a note for her wishes that she wants to fulfill. Will she finally start realizing those wishes?

Eru Yamada can't seem to get away from the supernatural. She's being stalked by a vampire. Her teacher is a werewolf, who also happens to think she belongs to him! As if that wasn't enough, yet another boy with supernatural powers shows up, trying to get her to fall for him, and she winds up with a rival in love who has dangerous powers as well!

Satsuki Kakeru lost his sister by suicide and has been living a dull life ever since then. One day, he is transported into a bizarre world "Red Night" along with his friend Minase Yuka and six other classmates. In order to survive and escape from Red Night, they must defeat six black knights in order to return home.

From here:
A cute story about Honoka and the guys she has to live with (a pair of twins in kindergarten, a junior high student, a high school student, a college student) as well as the other guys she meets in school. Honoka is generally a sweet, naive girl which draws an assortment of guys who instinctively want to protect her and maybe become her boyfriend... ^^;

27 year-old Ayukawa Yuuji has never been much of a man. He's more comfortable sewing than fighting, he faints at the sight of blood, and his fiancee is tougher than he is. He's also a terrible pushover. So when his boss at the medical lab volunteers him for some experimental drug therapy, how can he possibly refuse? All's mediocre for Yuuji: master of the pathetic.

Mediocre, that is, until a juvenile mass murder suspect jumps out from under Yuuji's bed, declaring him his "mate." Before Yuuji has time to argue, the stranger transforms into a 16 foot-tall dinosaur and beheads his roommate...

Yuuji suddenly finds himself the sole target of a lost race that turns into dinosaurs, an extremely scary woman with a Goddess-Complex, the yakuza, a mad scientist and one 17 year-old boy who really, really, really wants to sleep with him.

Series:
1. Aragami no Ichizoku (4 volumes)
2. Daichi no Okite (2 volumes)
3. Genshi Sairai (10 volumes)

27 year-old Ayukawa Yuuji has never been much of a man. He's more comfortable sewing than fighting, he faints at the sight of blood, and his fiancee is tougher than he is. He's also a terrible pushover. So when his boss at the medical lab volunteers him for some experimental drug therapy, how can he possibly refuse? All's mediocre for Yuuji: master of the pathetic.

Mediocre, that is, until a juvenile mass murder suspect jumps out from under Yuuji's bed, declaring him his "mate." Before Yuuji has time to argue, the stranger transforms into a 16 foot-tall dinosaur and beheads his roommate...

Yuuji suddenly finds himself the sole target of a lost race that turns into dinosaurs, an extremely scary woman with a Goddess-Complex, the yakuza, a mad scientist and one 17 year-old boy who really, really, really wants to sleep with him.

Series:
1. Aragami no Ichizoku (4 volumes)
2. Daichi no Okite (2 volumes)
3. Genshi Sairai (10 volumes)

27 year-old Ayukawa Yuuji has never been much of a man. He's more comfortable sewing than fighting, he faints at the sight of blood, and his fiancee is tougher than he is. He's also a terrible pushover. So when his boss at the medical lab volunteers him for some experimental drug therapy, how can he possibly refuse? All's mediocre for Yuuji: master of the pathetic.

Mediocre, that is, until a juvenile mass murder suspect jumps out from under Yuuji's bed, declaring him his "mate." Before Yuuji has time to argue, the stranger transforms into a 16 foot-tall dinosaur and beheads his roommate...

Yuuji suddenly finds himself the sole target of a lost race that turns into dinosaurs, an extremely scary woman with a Goddess-Complex, the yakuza, a mad scientist and one 17 year-old boy who really, really, really wants to sleep with him.

Series:
1. Aragami no Ichizoku (4 volumes)
2. Daichi no Okite (2 volumes)
3. Genshi Sairai (10 volumes)

In the only neutral country surrounded by many other countries, Kourozen, also known as God's country the princess, Matsurika, is troubled by a proposal from Prince Orland of Cantabria, a major power. One night, Matsurika is suddenly kidnapped by an intruder and brought to the open sea.
The man, Raju, who calls himself a pirate, says he will sacrifice Matsurika on the legendary altar, to attain his wish. The princess of God's country, the pirate surrounded by mystery.
A pirate tale about an ancient lore and the legendary altar. Let the battle begin.

Bakumatsu Renka Karyuu Kenshiden takes place in the first year of Tokugawa when the Shogunate and the emperor's supporters fight for supremacy. Shizuki Rin is a girl growing up in a Dojo who lost her memory of the past. Secretly the dojo deals with information. Including the violent Shinsengumi, some bishies and children who aim to get stronger.

A lamb surrounded by wolves gets a guard dog. But is the guard dog the most dangerous wolf of them all?!

This is a oneshot from the manga Ijimerarekko.

Suwa Daisuke is an ordinary, but popular, high school student. One of his classmates, Aikawa Hinako, is somewhat fearful of men and because she ran away from just his attempt to touch her hair, he states to one of his buddies, that she is the only one he wouldn't date, unaware all of the people in his classroom could hear them, including Hinako.
Daisuke's attitude changes after he unintentionally hears a shocking truth that she confesses in an abandoned church. His former annoyance turns to compassion and concern. Hinako is unaware that he knows her 'little' secret. Believing him to have no romantic interest, she becomes more relaxed and comfortable in his company. Their relationship faces a lot of obstacles, including jealous classmates.

In the days of war, a baby fused together with a "shadow" called Blue Dragon, a legend among the "shadows". Because of that, he was locked in darkness from birth until recently, 15 years later, to prevent his shadow from activating. From the beginning, the only person he knew was his tutor who would come see him everyday. But "shadows" have begun to run rampant as they escape from "Noir" through living beings. Humans call for the release of Blue Dragon in order to help mankind; thus their journey begins to seal the "shadows" along with the strongest: their queen.

A slightly different telling of the hit manga " Boku wa Tomodachi ga Sukunai." It still follows the same concept as making a friend making club. If you enjoyed the original you probably will like this.

The Otohime Private All-Girls High School is a very prestigious school and full of pretty girls. However, there is one male student attending the school, the director’s son Ouji. Ouji is a creepy pervert who can get away with anything because his father doesn’t punish him. He’s got video cameras all over the school to get footage of his classmates naked or near-naked and constantly sneaks around with cameras to get photos of them. The school is his paradise.
All this will change in the coming year, though. His father has decided to make the school co-ed, but with only baseball players so that they can aim for winning the National High School Baseball Championship at Koshien Stadium. In preparation for this grand dream, the director insists that the girls of the school establish a cheerleading squad. Seeing his glorious world collapsing around him, Ouji latches on to the most hopeful thing he can find: the cheerleading squad. Now he and the reluctant student council president, Itsuki, are going to recruit members and try to get this team going.

From MangaHelpers:
After high-schooler Nanatsu Io is crushed by disappointment in love, she finds herself pulled into a strange cafe, "Cafe Acheron," by pretty male workers, Kiba and Resato. Io decides to change herself by getting a job there as a waitress. In order to do so, she makes a contract with the cafe owner, Kiba, who tells her she must keep her stuffed bear (now conscious and referring to itself as "Father") with her.
It's only after this contract is formed that Io begins to learn the truth! Cafe Acheron connects the demon world and the human world, and it's there that many deals between demons and humans are made. In fact, Kiba and Lesath are demons themselves, and Io is already bound to them by contract! Her strange new life is just beginning.

Takumi is a high school student. He is withdrawn and is not interested in 3D things. In his town, a mysterious serial murder case happens and people get panicked. One day, when he chats on the internet, a man suddenly contacts him and gives him an URL. He goes to the website and finds a blog image that suggests a next murder case... On the next day, it really happens... Takumi Nishijo suffers from intense delusions as a result of his apparent schizophrenia and the extremely secluded lifestyle he lives as a hikkikomori. One day he accidentally stumbles upon a gruesome murder scene, a part of a chain of events called "New Generation." After this, his life gets caught up in these events, and he meets a bunch of increasingly insane anime girls with swords.

Chaos;Head's story is set in 2008 in Shibuya and is centered around Takumi Nishij?, a high school student at the private Suimei Academy, and the strange and brutal murders that have recently occurred in the Shibuya area, known as the "New Generation" (????????????) Madness. The story begins on September 28 with Takumi talking to an online friend called Grim (??? Gurimu?). Grim is trying to bring Takumi up to speed about the recent New Generation events since Takumi is not interested in local or international news. A person named Shogun (???) joins the chat room midway through Grim and Takumi's conversation. After Grim leaves the chat room, Sh?gun begins to talk. He speaks in a very cryptic and confusing manner, leaving Takumi nervous. He then sends Takumi a barrage of image links, one of which appears to be of a brutal murder of a man being pinned by stakes to a wall. The next day, Takumi comes across a real life murder scene. Witnessing a mysterious pink-haired girl pinning a man up by stakes in an alleyway, he immediately realizes he is witnessing the very murder detailed in the pictures he received the day before. Convinced Shogun is targeting him and the girl he saw committing the murder is somehow connected to him, Takumi tries to avoid getting involved with other New Generation events. However, as Takumi begins attempting to distance himself from the crime he witnessed, he soon catches interest of the police. With the police suspecting him, and himself convinced that he is being targeted by Shogun, Takumi finds himself caught in a spiral of delusions and paranoia, as he desperately tries to keep himself safe and figure out why he is apparently being targeted. He eventually comes into contact with several other people related to the events, including the girl he saw committing the murder herself. Unsure of what is real or who he can trust, Takumi finds himself thrust into a much larger scheme than he ever thought possible, as the mysterious company NOZOMI carefully plots something from behind the scenes. From Baka-Updates: Takumi is a high school student. He is withdrawn and is not interested in 3D things. In his town, a mysterious serial murder case happens and people get panicked. One day, when he chats on the internet, a man suddenly contacts him and gives him an URL. He goes to the website and finds a blog image that suggests a next murder case... On the next day, it really happens... Could he be really the one responsible? And where is the D-sword that he is supposed to find?