From Kokoro no Oasis:

Tomas is a proud and fearless assassin who has never failed a commission. So what happens when he's commissioned to kill Myra, an immortal vampire?

Mangaupdates:When a vampire is in love with a human...and you add zombies into the mix...

What would you do if a tiger skin bikini-clad alien followed you to school every day? Poor Ataru's life has never returned to normal since volatile extraterrestrial princess Lum fell for him. Now an excruciatingly wealthy and genteel rival, Mendo, adds to Ataru's torment. Not to mention an unending stream of extraordinary classroom visitors and educational materials including incompetent cherry blossom spirits, a legendary nightmare-eating tapir, and a fourth-dimensional camera that breeches alternate realities.

Note: In 1981, this series received the Shogakukan Manga Award.
Won the 18th Seiun Award for Best Comic (1987).

From Viz:
Rejected way too many times by good-looking (and unattainable) guys, shy Riiko Izawa goes online and signs up for a free trial of a mysterious Nightly Lover "figure." The very next day a cute naked guy is delivered to her door, and he wants to be her boyfriend!
Has Riiko died and gone to heaven? The cute guy turns out to be sweet, smart, a great cook, and lots more. And he looks like a million bucks, which is what he's going to cost Riiko if she doesn't return him in time...

*Includes two other side stories in the last volume called:

• Ohoshisama ni wa Sasemasen! (I Won't Let You Become A Star!) -
A special short story that was published in a freebie book put out in Sho-Comi. Sneaking into a boys' school to exterminate ghosts! However, what is the boy Chima has always admired doing there...!?
- ShoujoMagic

• Shounen Aromatic (Aromatic Boy) -
Kabuki Takitsugu is a boy who has the family trait of smell. He can smell anyone's fragrance and find their perfect match. One day, a mysterious girl named Hatsune appears before him, asking him to find a match for her. But, for some strange reason.. Hatsune doesn't have a scent.

The story of castle otaku, Ume, meeting a sexy blonde escort girl named Shigure...Is that really it or is there more? Read and find out!

From Ivyscan:

In 1875, after the death of her parents, Uno goes to live in the Kanou household as a companion to Mariko, who is the same age as Uno. The two girls become very close and attend Cimons private school.
This great romance tells the story of the loves and dreams of two girls growing up during the westernization of Japan in the Meiji era.

From ShoujoMagic: This manga is loosely based on The Tale of Genji / ??????(Genji Monogatari) and is a MUST read! When the Emperor takes a new Empress, she is barely older than the Emperor's son Hikaru. She becomes both the one woman Hikaru loves and the one woman he can never have. And so Hikaru's feelings roam as his body wanders from bed to bed, seeking a replacement for her. When he finds the girl he believes can take her place...he commits a terrible sin. Now, a thousand years later, Hikaru's nightmares become reality as he is punished for past deeds in a new life--the greatest playboy in all of history...shakes like a lamb when any girl touches him!

Ganota Utsuki leads a normal life, working for a big company in Tokyo. She has just one big secret: she's a giant Gundam otaku and she doesn't want anybody to know! And the fact that her number one love interest despises all things Gundam doesn't help any either.

While many of us would probably scream at even the thought of a ghost being near us, Freshman Nimura Kensuke just thinks of it as a common everyday thing, seeing as how he has the uncanny ability to see so many of them on a daily basis. Things soon heat up for him when he meets a girl who changes his life from then on. Her name’s Kagura, and she has the power to summon a mighty “spirit devourer”--otherwise known as a “Ga-rei”--called Byakuei. So, what’s Nimura to do? Chase down the evil spirits and have Kagura summon the Ga-rei to devour them, of course! Now, come feast on their adventures like some ravenous Ga-rei!

It's about a girl named Hatsune with a "bad mouth", for lack of a better description. She's kind-hearted, but her mouth spews the total opposite of what she means (which is probably due to the fact that she grew up with only male influence). And so she is seen as an arrogant, vulgar girl at her school, but all she wants is a boyfriend. Well, that is, until she gets accepted at the Maidens' Club, where she meets a guy named Kirie, with a somewhat unique habit that happens when a girl comes within a foot of him. And everyone says he's gay, even Hatsune. How will these two fare? Will Hatsune have a boyfriend at last? Will he be more than just a friend?

Rion is on a mission to find her missing friend Shihoko. Her only two clues are a card given to her by Shihoko and a confession that her best friend was in love with a vampire. Thus she heads down to a club filled with pretty male escorts whom she insists are vampires.

Suou, the owner of the club, insists that he doesn't know anyone by the name Shihoko at all. He claims that the hosts are not vampires. After he tries to chase her out of the club, Rion throws a very, very expensive bottle of wine onto the ground to prove that she is not leaving until she finds the truth--and finishes paying for the wine by working part-time at the club.

While trying to rescue her friend, she realizes that Suou and the other hosts are not the group (vampires or not) that kidnapped Shihoko. However, in the middle of that life-endangering truth-seeking expedition, she's saved by another group of apparent vampires. So, who are the real vampires after all this?

From Viz:
Sad at the thought of spending Christmas alone, Kurumi goes out for a walk. While she’s crossing the street, a boy bumps into her and a rein suddenly appears that binds them together. The overjoyed boy tells her she’s his master, and that she’s a Santa Claus. Kurumi dismisses him as a crazy person, but then he transforms into a reindeer?!

From Dragon Voice Project:
The first three chapters are about this cute "couple" and the last one is a oneshot called Amai Kamiato.

• Amai Kamiato -
Ren is a "tame" vampire and currently spends his lifetime with a detective as blood donor while in return he helps her investigate at night. Then suddenly, the most unimagineable thing happens: Ren's daughter Maia appears, but vampires can't have children!

Note: there's a side story of Penguin Kakumei in Vol.3, which hasn't been scanlated.

As a child, Usagi Mitsuki made a promise to a crying girl that when she grows up he will marry her. When he finally becomes an adult, she appears again to make good on his promise, but much to Usagi's surprise "she" is a not only a he, but his family's shrine's goddess!

Haruka is a sweet, innocent high school girl who is very excited to meet her new step-brother, Tsukasa who is in grade school. Tsukasa is in love with Haruka this manga is filled with short stories that take place in 'Your made matenai'.

Story 1 takes place 1 year after Tsukasa started to live with Haruka on her school trip.

Story 2 takes place 6 months after Tsukasa started to live with Haruka.

Side story of Haruka and Tsukasa is in 'Kakedashita Cupid' it is # 6) "Of Course I Can't Wait Until Nightfall" or (Mochiron Yorumade Matenai) if you want to read more short stories

Also includes:

O.HA.YO

Love Is Sometimes Like Rain

Collection of short stories:

• Yappari Nui ja Dame!
Yui's boyfriend Sota invites her on a 2 day 1 day stay at a hot-springs inn. Sota looks and act like a sheep when he's around people but when they're alone he's like a wolf. Her friends gave her alot (10) condoms for that trip and she was embarrassed and don't want Sota to find out. And so the trip begins...
Dreaming Scanlation

• Dekiaki Love♥Virgin
Shiramine Konatsu is still a virgin and haven't gone on a date before. She couldn't say out loud cause she think her classmate would laugh. What doesn't help is that they think she been on a lot of date and isn't a virgin. They see her as a pretty girl who's good at makeup. Due to her appearance they think she's a playgirl. She has a crush on her classmate Suzushi Asano but because of what everyone else think of her she doesn't have the courage to confess so instead she drops hint but he don't seen to pick it up. When he was talking with his friends she overheard he like girls with experiences...
Dreaming Scanlation

• Rakuen Drops
Mizuka wins Estorado. Before she can get on the plane her friend cancels and she finds out she must go on the trip alone. She meets Maya a boy with exotic eyes and he invites her to his villa...
- Manga Abyss

• Chura♥Koiiro
A cute story about a boy who follows a girl to Okinawa from Tokyo after she moved there 2 years and a half ago. During that time, he has aquired a talent for taking photos. He wants to go to college in Okinawa if she says yes to "going out" with him. But she gets a phone call from his father...
- Manga Abyss

The new student by the name of Masato Takasaka transfers to a school full of delinquents which is currently undergoing a battle between the various student activities committees. His fleeting expectations of a delicate and loving school girls and a peaceful school life go out the window the moment he meets the declared queen of the school Onizuka . What will happen to the school life he dreams of in this romantic/comedy of two unlikely partners in school full of delinquents?

From Aerandria Scans:

A collection of love stories! Each story is heartwarming and sweet.

+ When you meet your special person, what do you do when you find out that he’s evil?

+ After living like a doll for most of your life, is it possible to change?

+ A chance meeting with a boy changes the life of a girl with an illness forever, but that meeting doesn’t seem to matter to the other person.

+ Loving a younger guy can be really tough, especially when you look like a child while he looks like an adult!

The story revolves around the title character Yukisada Tamura, who is in his third year of junior-high school when the story begins. Yukisada has become captivated by a strange girl named Komaki Matsuzawa who says that her birthplace was on another planet and she is trying to go back. One day, Yukisada confesses his affections to Komaki, but immediately following this, Komaki's grandmother dies and she has to move away. They both manage to keep in contact for a while by writing letters, though Komaki stops writing around the time of the high school entrance exams. When Yukisada enters high school, he becomes concerned with one of his female classmates named Hiroka Sōma. In junior-high, Hiroka was constantly bullied, which would cause her to stay home, eventually causing her to become isolated and helpless. Yukisada chooses not to ignore her like most of his other classmates, and instead starts encouraging her and helps her to build her self-esteem. Before long, Hiroka falls for Yukisada, and one day confesses her love to him. During this time, Yukisada has kept in contact with Komaki and has mentioned Hiroka in his letters. Thereupon, one day after a long time, a letter arrives from Komaki to Yukisada asking who exactly is Hiroka.

Bored of sitting around holding a wine glass all day, the Demon Lord is looking for something new. Something cute. Someone like Komomo, the level 0 heroine who has just appeared before him, ready to vanquish him like all heroes (or heroines) do. Faced with a demon king who'd rather watch TV under a kotatsu and make out with her than spread evil over the land, what will Komomo do?

* Also include are the following short stories:

• Calling in vol. 2
• Stray Doll in vol. 2