Love can be obsessive. Like wanting to rip the wings off a butterfly. Chouko has been in love with Taichiro for a long time. Taichiro and Chouko have known each other since childhood. At one point, Taichiro became very candid and told Chouko that he hated her so much that he wanted to kill her. Even so, Chouko's desire toward him never really changed. One day, a senior in her athletics club confessed to her. Filled with burning jealousy, Taichiro also confessed to Chouko. Their insecure, but very obsessive love begins.

An extra prequel can be found inside of Yoru Koi.

From Aerandria Scans:

The heir of the huge Fushiki corporation, Tomoe, comes to Japan as an exchange student. He is his father’s youngest child and on top of that - his mistress’s child, but he was still appointed as heir. There’s danger that people will aim for his life. They attach to him a new maid, with glasses, naturally clumsy and ill-mannered... who turns out to be his new bodyguard, defending Tomoe with her mop!

From Viz:

Seventeen-year-old Chiyuki Matsuoka was born with heart problems, and her doctors say she won't live to see the next snow. Touya is an 18-year-old vampire who hates blood and refuses to make the traditional partnership with a human, whose life-giving blood would keep them both alive for a thousand years.

The story is about Jung Won who live with her mother, a florist. Some day, when her mother is on an errand, a wounded boy, Ha Jun, who is her classmate suddenly enter in the shop. Jung Won is a quiet and shy girl whereas Ha Jun is the popular boy. Will this night will change things between them?

The era is Edo (1603-1868). Tsubaki is a merchant's daughter who is sold to the red lights district after losing her family in a fire. Driven by desire to triumph over her first love, a servant, she aims to become the top courtesan! She polishes her beauty and artistic talents every day, but for some reason, her senior courtesan and current number one oiran Takao has an eye on her?!

In volume 4 is included the oneshot Ginrou no Sakura.
A beautiful wolf with silver hair and silver eyes... Surely I'll be captured.

From Kokoro no Oasis:

It’s about 16 year old orphan Sakiko Amamiya and a dying cherry blossom tree that her grandmother left to her to look after. Of course, that includes looking after Shizuya, the spirit that lives within it as well…

From Chibi Manga:

"We talk to our customers through the internet."
This is the famous logo of the most popular host club in Akihabara, Cyber Host Club. Cyber Host Club is so popular that there are customers who fight each other in order to attain the mail address of the No.1 super handsome host, Ouji. Akari, an Ouji fan, has fallen in love with the kind Ouji at first sight. In order to become closer to him, Akari must use her computer. But she is horrible with technology, especially computers. But good thing for Akari, she finds an Akiba otaku, Touma, who is good with computers. She'll have him teach her how to use the computer... but... why does he look like someone Akari knows?

A Smart 3 person Group(?), gambling on their lives, become ghost hunters!

An injured prince under a magic spell that turned his head into that of an Eagle's hides out in a church while under the care of a spunky orphan named Elle. With only a few days until his 20th birthday, Eagle Prince Rei must find a way to return to his original form so he can claim the right of royal succession.

Naho wants to be Hayato's girlfriend, but senpai won't quit noticing her.

A prince who’s been paying back his country’s debt little by little through mercenary work suddenly has the chance to get a huge sum of money. But the catch is, he has to arrest the leader of the strongest thief gang.

From Tokyopop: Anya, the new girl at Lucrece High, just isn't fitting in. Her dream is to join one of the school's elite sports teams, but when she tries out, she's instantly rejected! Anya doesn't get mad, though--she gets even. When she meets other "misfits" who've been similarly written off, they form their own soccer team, complete with cool, edgy uniforms. They may not be the most experienced, but they've got something no other team has: style. Say hello to the world's first Gothic-Lolita soccer team!

Sarah knows Perfect Prince Finney's true nature.

Jin-Pyo is in love... but with his brother's girlfriend. Sadness and tragedy will come out of it.

From MangaHelpers:
After 10 years of training, two young shape-shifting dog ninja are told that they're ready to be tested in the field. They find their new owner, Mitsuyoshi, who takes them in on the assumption that they are simply lost doggies. He gives them new names--"Hanzou" and "Hadzuki." The two dog ninja are supposed to protect him from any other demons, but they must not let him learn his new dogs' true identities. Unfortunately, Mitsuyoshi met Hadzuki in her human form very early on, when she rescued him from a couple of demons. Now she's got to keep her human and dog relationship with Mitsuyoshi separate, something not made easier by constant demon threats and her growing attraction to him.

A collection of sweet love stories:

1) Honey Moon
As her father married again, Mio has a stepbrother. Surprisingly, he is Junpei whom she has been in one-sided love with. The situation complicated her feelings, but they began to live together. Now Mio and Jumpei have to spend three weeks alone.

2) Best Position
Chika thought that Yohei is going to confess to her, but instead he ask her to be his comedy partner! Undeterred, she still loves him and agrees...

3) Cool
Solving math problems was Yuriko's only interest until a certain popular boy Asami had confessed his love to her. She is also dragged along his pace, but somehow she doesn't mind...

4) Last Scene
Mina and her class are graduating soon. They decided to film as a tribute for their graduation. Mina had Minamoto Naoki, a quiet boy in the class to help bring this project together since he had previously filmed the class and has the talent for it. During the last couple months, they have become closer from this project, and as graduation comes near...

Homare doesn't succumb to her father's disappearance and her mother's illness and works hard to inherit the tumbledown inn with hot springs. What will happen to the firm rule of no love!?

Compilation of seven pure love stories:

1. Girl's Revolution by IKEYAMADA Go
Sakurai Azusa has a leading role for her school play as Alice, but the big problem is that her voice is too quiet. With the help of Oono-kun whom constantly scolds her to do her best, can she become a great Alice in time for the cultural festival?

2. Haru ni Naru Made Matte (Wait Until The Spring Comes) by MINASE Ai
(Also included in 37°C no Boyfriend)
Yuka, a soon to be a high schooler was so excited to come to school that she dressed up in her uniform and went to school the day before the entrance ceremony. On that day she meets a certain guy that she liked. But when she actually attended school for the first day, she was in shock when she met her crush again...

3. Puberty BABY by CHIBA Kozue
To Eri, Kaoru is like a troublesome little brother or a cute puppy. She's been taking care of him for fifteen years since they live in the same apartment. She thought he had no interest in girls but that changes when she catches him with a group of girls and flirting!
(Also included in 7 Genme wa Himitsu)

4. Koi, damono (Because, It's Love) by SHIRAISHI Yuki
While Jun is washing mops, the guy beside her becomes soaked through an accident. She hands him a handkerchief that's special to her. Before she could ask for it back, he gets dragged away with her important handkerchief!
(Also included in Akuma de Koibito)

5. Ore-Sama Housekeeper by ICHIKAWA Shou
(Also included in Ouchi e Kaerou)
Shino Anzu finally has the house to herself, so decided to live up and make a mess in the process. Her moment of bliss was suddenly interrupted when the "ore-sama" housekeeper arrives in her place! Anzu was, however surprised as she saw a different side to him while he became a housekeeper at her place and starts to perhaps fall for him?

6. Dare yori Soba de Kataomoi by HOSHIMORI Yukimo
Mui has a "dog" called Kotaro, whom is her classmate. They always had this strange relationship, but Mui wants him to be her boyfriend not a dog. Can Mui finally break their master-pet relationship and become a couple?

7. Kanpeki na Kimi, Donkan na Anata. by HATTORI Miki
Madoka is considered to be a perfect and popular girl at school with an equally handsome childhood friend that's the president of the soccer team. It's only natural that they have been labelled as a couple even if they are not. In fact, the one she likes is Ryoutaro from the soccer team. Can Madoka gather the courage to confess to him and not cause a misunderstanding?

Why did you kiss me... Why did you fall for me...?

The most popular guy kissed a sleeping girl? What can she do, now that he has little by little, stole her heart away...

Due to living with her 3 brothers and father for so long, 2nd year Mizumori Hidarishita has come to hate all guys! Against all odds, she encounters Koizumi Ikurou, an avid girl-hater because of his troublesome sister. Tired of being pursued by the opposite gender, they both seek refuge in holding onto their beliefs, but what happens when Mizumori's dream world is torn apart?