Kaga Ryousuke, a helplessly romantic teenager, was walking in the rain when he sees a beautiful girl with red eyes drenched in the rain. Everyone was avoiding her, but Ryousuke was taught to treasure women so he offered his help by letting her dry off at his home. Ryousuke can't imagine that this mysterious girl would stab him in the chest and leave him to die… Or did she? Who is this pretty girl and what does she want with him?

From MangaHelpers: Shun knew what to expect when he became a high school student. As he entered the gates of his new school, four beautiful girls suddenly surround him. These four girls are the same four girls he grew up with since kindergarten. The four girls are Rio the athlete, Miku the cook, Nana the nerd, and Yuri the student president. These four girls will be battling it out between them in order to win the heart of their beloved Shun. [DrCoke]

A small chapter like memoirs of a boy and the girls who are in his like. Classic lazy good for nothing with 3 hot school chicks = GOLD!

Summary from Manga Abyss : My name is Kohinata An. My parents went overseas to work and left me to live with my grandma. However, she was hospitalized all of a sudden, leaving me as the manager of her lodging house! Furthermore, there are three cool guys lodging there! Ba-dump. Ba-dump. But one of these three guys, Ryuu-kun, seems to hate me for some reason... What for--?!

Meet Hana and Tohara. Two voluptuous women out to become fully fledged witches for life. To do that they just need to grant one wish to get their license. They see an opportunity in the form of a handsome Bishounen named Touma. But turns out he is a 24 year virgin otaku who is in love. Not only that, He has a not one, not two. But THREE wishes to grant...Can these Bodacious beauties take on the challenge?

Tachibana Sango is a poor student looking for a decent place to stay on a shoestring budget. When it appears that he has found the perfect place, it turns out to be anything but, as his new roommates, a trio of young ladies, seem determined to run him ragged and make his life miserable.

Muon Sorata is an ordinary college teacher. However, there is a big secret beneath him. He is actually a mysterious "MOUSE" thief. He is smart, wealthy, powerful and influential. Above all, he steals everything. He has three beautiful female subordinates, but you can refer them as his slaves. Momozona Mei, a computer and physics expert; Kuribayashi Yaoi, a chemistry expert; and Kakio Hazuki, an agile fighter, good at combat and sports. And there is nothing that cannot be stolen by "MOUSE"...

NAGAI Junpei, a high school freshman, wakes up one day to find all of humanity in a deep sleep. In a free world, overflowing with desires, his strange survival days begin.

From Storm in Heaven: The orphan girl Angelique lives in Hidamari Villa with four other comrades who make up the Orb Hunters. They aid her in purifying otherworldly creatures known as Thanatoi who attack the populace, draining them of their life energy. Two large organizations also oppose this threat, while its members try to discover more about the Orb Hunters and a possible connection with the legend of the Queen.

Taglines: Do you want to know this transfer student's secret? Are you going to fall in love with the world's most cheerful little girl?

Updating

Kanadegumi follows a girl named Miyabi Neko and her interactions with five attractive young men. The story takes place in Tokyo and centers on an imperial opera company named Kanadegumi. From Phoenix Serenade Scans: A story set in the Taisho Era. Meet Miyabi Neko, a girl with bad luck from a small place called Izumo, who aspires to become an actress by joining the capital's most popular acting group Hanagumi! And after some hard work, she was finally accepted into Hanagumi! But, when she reaches the capital, there is some disturbing news. Apparently, she is not to join HANAgumi, but the capital's music group KANADEgumi! And she meets some strange but handsome young men on the way? What is Neko's life going to be like in the capital?!

From Shoujo Manga Maniac: Nao, a first year at jr.high school, decide to enter Seisei Gakuen in order to follow the person she fell in love with at first sight! Once coming there she find out that her "Onii-chan", the nick name she give to her beloved Wada Yoshikuni, is part of K.I.S.S....but what is K.I.S.S?

From Manga Updates Karugasaki Tora decided to repeat a grade and turn into a delinquent just so he could be popular, on his best friends advice. However, his plan backfired and nobody talks to him in his new classroom. The only thing he can look forward to is seeing the cute girl sitting next to him, but after trying to talk to her she immediately kicked him and threw him out the window. Later the same day, though, he saved her and a little girl from being hit by a truck. No longer able to avoid him, the girl reveals that she's a ghost playing a shinigami's game. She must get the boy she likes to return her feelings at times given by a pair of hourglasses so she can return to life, or fail and be sent to hell together. Unfortunately, her feelings have awakened for Karugasaki...

Meet Min Woo. A normal 18 year-old high school boy. Well...normal except for being a total otaku. He does what every good little otaku boy does. He collects figurines and toys, wins prizes at cosplay contests and is a two-time champion of the fighting game "Metal Heart". Unfortunately for him, his social life is dominated by girls telling him to get lost, since his otaku-ness might be contagious. But after an accident while he is invited to participate in the playtesting of "Metal Heart 2", the main character to the game, Min Sia, materializes in front of his eyes at a cosplay festival. And now, Min Woo has to win Sia's heart in a real-life dating sim game with the fate of the world in the balance. Ok, so maybe not the world, but at least the fate of the company behind "Metal Heart 2" hanging in the balance. And who is this girl Nuri who appears following Sia, who claims to be Min Woo's childhood friend...

From Transient Mirage: Hina Nobara is a girl from a good family who is the student morality officer for her school, the private Matsubase Academy. One day, a group of four sexy guys from the neighboring delinquent boys high school suddenly appeared before the sober and serious Nobara. They were incredibly attractive, but they were also the worst sort of people. Will they keep the innocent Nobara on their hook!? Good-looking and thrilling! This school diary of swoon-worthy gorgeousness and passion is beginning!!

An Adaption of Sword Girls online game

Nishimura Akuji is an ordinary middle school student, until one day he gets a phone call from the Angel Realm. He's been chosen at random to be a Witch Trial Judge! He meets his new "master," a tiny angel named Lulu, who explains that their job now is to find the God Witch hiding somewhere in town, or risk her taking over the world. Using various methods, Akuji and Lulu have to hunt down suspected witches and subject them to decidedly embarrassing trials in order to expose their true forms. They're going to need all the help they can get before they run out of time! ---- Based on the Nintendo DS game by SNK Playmore.

Noya Itsuki just started his school year at the Ebisugawa High School and since he has always had a fascination with space, he decides to join the astronomy club. However, he mistakenly walks into the all girls Otaku Club. He notices that the members are really weird, but Itsuki has yet to realize that he isn't in the astronomy club. His life is about to get complicated by being surrounded by so many girls.

From Spoils: Engage – a covenant pledged between knight and noble This is the tale of individuals tied together by the sacred bonds of Engage Tia is a young girl who hails from the remote regions of the Grunwald Empire. Due to royal decree, she is required to attend a prestigious academy located in the imperial capital. The academy serves not only as a networking spot for the children of aristocracy to meet and rub shoulders, but is also where the paths of nobles and knights cross. Tia herself is on a mission to find a knight with great promise, however, who she stumbles upon instead is the academy’s problem child – Duran. Due to an encounter with Duran, Tia finds she is able to draw out a knight’s potential, normally only done via Engage. As someone who can call forth the powers of Engage without a pledged covenant, Tia finds herself the target of many knights…

This series has been on hold many times, and now the author has decided to stick to volumes instead of serializing. From Tokyopop: Welcome to Faeries' Landing, a place where the real world and the faerie realm collide. Sixteen-year-old Ryang doesn't realize that supernatural beings descend on his town at night, but when he stumbles on a group of faeries bathing, he ends up becoming guardian of Fanta, a grounded--and very fetching--faerie. Having an otherworldly babe hanging on you 24-7 doesn't sound so bad at first... but when Fanta’s rival curses Ryang, he is destined to encounter 108 doomed relationships...

A low-price, high-quality apartment in the metropolitan area of Tokyo is nothing short of a miracle! It exists, but there's a catch -- tenants must be good-looking and pass an interview by the landlord!? This is a love comedy about what happens when the beautiful people are all gathered under one roof!

The fate of the world rests on one man's shoulders. Or, to put it more exactly, it rests on his balls. In a freak sealing accident the Queen of Terror is sealed into Satou Kohta's balls, thus preventing her from reigning destruction on the world. However, a lesser devil, Elyse, has been sent up to Earth to release the Queen at all costs. The only way to do so is to make Kohta ejaculate, and Elyse only has 30 days to do it. The battle for mankind has begun, in Kohta's pants.

After a crazy night, a young teacher is tricked into becoming the father of two gorgeous young girls.