Takiko felt inferior over her look and height. She was always envious of her best friend Mika who had what it takes to capture a guy's heart. One day she meets someone who eventually, becomes the love of her life, however her grandparent objected this relationship due to...?　

From ShoujoMagic:
A series of non-linear and interrelated stories filled with bishies and angst!
Houjou Academy is a private school, isolated from the rest of the world and attended by the heirs of rich and noble bloodlines. At the center of everything is the first son of the Hanabusa family, Kinu. Through direct or indirect involvement, he is responsible for the scars carried by the students of Houjou Academy--he is like their God. The cycle of base desire and higher love begins with the introduction of an unsullied girl named Nanaha, whose denial of Kinu's casual touch causes him to reevaluate his perception of women, and he cannot help but leave a scar on her as well...

Having been forced to leave the side of passionate Rin three years earlier, Sarasa thinks she has found happiness again in the gentle arms of Akira. But fate plays bittersweet tricks when least expected, and what may have seemed like the past has its ways of catching up.

Hinano, an ordinary girl, is in love with Katsu who dreams of becoming a scriptwriter despite the difficulties of the trade. They enjoy a perfect love until love rivals come to threaten their relationship! Sei, a beautiful boy and compulsive flirt, attempts to seduce Hinano and Juri, an intelligent woman, tries her hand at getting close to Katsu! What will become of the couples love? (By FATE)

From Aerandria Scans:

Kanako is an unattractive and not very capable office lady, until the day her mother passes away and she turns out to be the sole heiress of the old and elite Kinaga house. So suddenly, Kanako has not only to uphold her duties as an heiress, but to turn into an attractive lady so that she can marry accordingly to her new status. Thanks to the family butler and her own efforts, she manages somehow, but even in the middle of her newfound glamor, her world still continues to revolve around her butler...

Yurino's beloved is in financial trouble, so she decides to help him out by being a prostitute. However, the first guy she says "wanna have some fun with me for 500 bucks?" to happens to be a famous popular music composer, Yukio, with one of his singers, Karin, with him. The book consists of a collection of dangerous and sad love stories.

A Collection of early stories:

From Covenant of Darkness:

Face, body, and talent, all 3 are what conspires Misako’s love for the star of the basketball club, with a genius ability and super beautiful Urasawa-kun. However, Misako's first and last profession of love in her lifetime was drastically discarded. Strangely, Urusawa-kun decided to model nudely for an art exhibition in hopes to winning a prize because he has an eye for that thing. The lingering affection is banned and the conditions that sends Misako's heart to abide… A romantic comedy treasure?!

First Kurumatani Haruko Long series (no more a simple oneshot)!!! By Alessia-chan: Ruki is an otaku and is in love with a character of manga called Shun-sama! Suddenly she meet a guy that will live in her house due to her mother sudden travelling and that looks exactly the same as Shun-sama! But does this guy is really a prince-like such as Ruki expect?

These are different stories involving Devilman's world. Some are about Devilman and add to the mythology some are separate stories that don't involve Devilman but take place the same time as the events in the original Devilman manga. They are illustrated by various artists. There are some color pages in the start middle and toward the end. There are some truly amazing art and stories in these volumes. Number one is written and illustrated by Lazy Hagawari, Tatsuya Egawa, Katsuya Terada, Ken Ishikawa, Go Nagai and Shinichi Hiromoto. Number two is written and illustrated by Hitoshi Iwaaki, Noriko Nagano, Go Nagai, Akihiko Takadera and Kazuko Yumeno. Number three is written and illustrated by Noburu Miyama, Miki Toro, Shinobu Kaze, Sho-u Tajima, Masaomi Kanzaki, Yoshikazu Yasuhiko and Iou Kuroda.

1-3) Gaten na Aitsu
The son of the owner of a construction firm is harassed by his seniors in school. His father's live-in worker happens to pass by while he was being assaulted... Story continues in act 4 found in volume 1 of Play Boy Blues (chapter 5).

4) P.B.B.
Shinobu and Junsuke are still living together even though Shinobu quit being a host. Something starts to change between their relationship... (this is the first act of P.B.B. and the story continues in chapter 1, volume 1 of Play Boy Blues).

Ikehata Shino was raised as a kuniochi, a fearless male ninja who uses sex to get information from men. Since he's a guy Ikehata never thought he'd use his skills, until he met the cool, handsome Andou. But no matter how hard he tries, Ikehata can't seem to get his man...

From ShoujoMagic:

As the substitute for a teacher on temporary absence, Shibata Seiko is now the teacher of an all-boys' school. As she just made up her mind to be a fantastic teacher, a man has come into her life and took her as his 'sex toy'?! And the man is actually a teacher from Seiko's school!?

From Blissful Sin:

1) Master and Dog
University student, Uehara Yuuji, is an earnest guy with slight masochistic tendencies. Yuuji also happens to be totally in love with the cold, glasses-wearing Tatsukawa-Sensei. Ever since he first spotted Tatsukawa-Sensei, he confessed his feelings time and time again only to have the anti-social Tatsukawa-Sensei refuse every time. “That’s it! If I’m not human, he will fall in love with me!” Sensei then orders the dog cosplaying Yuuji to do what?

2) Spoiled Guinea Pig
When Kurosawa's beloved sempai comes to freeload at his house, how long can Kurosawa hold out? When Kurosawa comes home to Sempai in a bunny suit, he nearly loses it... but what about the next morning... Sempai is has fur?! Smex ensues.

3) Secret Love Lesson
Home-tutor Asato-sensei and his beautiful student Ren have confessed their feelings of love for eachother, and are ready to get their pants down.... now the only question is: Who gets whose ass?


4) Feverish Eye complex
After two years of being an extra, Yuzuru begins "secret training" with his new manager, hoping to become a first rate actor. (p.s. "secret training" = sexyness~~!)

5) Love-possessed Boy
Lazy protagonist is hot on his soccer-crazed sempai! Is there any way for him to capture sempai's heart without joining the soccer team? ...How about some love potion ❤ and maaaaybe an aphrodisiac?

6) Drown in Love
Lil' cousin in love with big cousin. Big cousin is defenseless and touchy-feely... can lil' cousin take much more?!

7) Triangle Love
Strong and impulsive Hoshino Seita; Tall, beautiful Shinosaki Eiru; and finally, smart but shy Houyama Riku. A pure (lol) love story of the three classmates.

8) Awkard Kiss

9) Number Up! Split Boy

The main character finds his possessions "abused" by some unknown person until he finally caught the culprit... masturbating to them?

From VIZ:
In company-owned rabbit-hutch apartments live tenants who can't afford to live anywhere else, and the apartment complex in which high-school girl Hatsumi Narita lives is ruled over by the rumor mongering, self-righteous Mrs. Tachibana. Get on Tachibana's bad side, and life becomes hell. When Hatsumi has to buy a pregnancy test because her popular sister Akane's period is late, Mrs. Tachibana's son, Ryoki, who used to bully Hatsumi as a kid, promises not to tell the world about Hatsumi's secret, only if she becomes his slave. Suddenly, Azusa Hatsumi's protector in their youth, reappears to save her again! He's moving back into the neighborhood! Despite the budding romance between Hatsumi and Azusa, Ryoki has control over her through the secret that could ruin the lives of everyone in Hatsumi's family, and he hasn't forgotten who his slave is.

Yuzuru is a fifteen year old girl who is attending her first year in Houjou Academy. At her summer job, she met a troublesome rich boy, Renge Kai, who is attending the same school as her. Kai is part of the Kugeka, a class opened only to the rich students of Houjou.
At the end of the summer break she finds out that she has become Kai's "Honey". This nickname is given to all the students from the regular class choosen by the Kugeka to become their assistants, so that the rich boys can be successful without any problem. The up side to being a Honey is that all their school fees will be taken care of.
Although Yuzuru's family has some financial problems, she doesn't want to accept her role of being Kai's honey. But the only way to quit is to leave the school... What is she to do?

Japanese yakuza clan heir Ranmaru just got married on a lavish cruise ship, but things aren't as they seem. The marriage is just for the appearances, and he ends up getting drunk and spending the night not with his bride but with the sexy ship captain. When the two men meet again in Italy, it is the start of a spectacular love story.

Includes an extra story called Koi no Annainin (The Guide of Love).

From Nekohana:-
Meet Izumi and Tachibana. They're right in the middle of a very hot and heavy romance. Seems normal right? Except Tachibana is a teacher at Izumi's all girls high school. Calm and collected Izumi is part of the student council. Tachibana is lecherous and is always trying to find a way into Izumi's uniform. See if they can handle their hush-hush relationship and themselves.

1-4) Ikenai Otoko
Ryou was dumped because of his lousy sex techniques and in order to improve his skills, he turned to JS Pro, a company full of handsome men. His debut as a seme was a complete failure! He decided to challenge the uke role by teaming up with Tatsuya, a man he admired, however…

5) Take Love Easy
The first encounter of Shino and Josh!! "Shino ~ The person you saw in the video wasn’t the real me… Would you let me hold you and show you the real me?" "Josh ~ Is my roommate truly the actor in the gay video that I fell in love with!?"

6) Ikenai Invitation
The extra chapter features Iijima from Rumble Rush.

Collection of short stories:

Koi wa Tenka no Mawarimono

Ikenai Candy Love
Satoko has suddenly been informed by her irresponsible boss that she’ll be fired soon and only has one more month before she is kicked out. She tried to reason with the company's number two, Tanigawa-san for some leniency but the cool yet quiet Tanigawa just agreed with the boss. But on her way home from work, Satoko found Tanigawa in the midst of something naughty and he finally confesses that he’s a sex addict! Will Satoko now use Tanigawa's dark secret as leverage to keep her job? Or maybe she wants to be a part of the naughty deed herself!

Katekyoushi no Okotowari

Honey-Comb

Nagisa no Shy Boy