From Aerandria Scans:

Rinko is an ordinary girl who was born with a mysterious birthmark on her left arm. But when that mark starts to get darker, strange accidents begin to happen everywhere around her, involving even the people she cares about. What will the powerful magic awakening inside Rinko bring her?

In 1987, Purple Eyes in the Dark was awarded the Shogakukan Manga Award for the shoujo manga category.

Later it got a continuation: Yami no Purple Eyes - Bangaihen - PANTHERS.

From Shoujo-Sense
Nothing in Sakiko's life seems to be going right. Frustrated with her job and nursing a broken heart, she embarks on an ocean cruise, hoping the change of mood will turn things around for her. Never does she expect her vacation to end with the ship capsizing, stranding the surviving passengers on an island. When a young man saves her life, she finds herself drawn to him, but soon discovers he may be harboring a dark secret...

Yuuto Sasaki is a trap who forces his homeroom teacher Sasaki Tsukimori to spend some quality time after school, which usually entails Sasaki playing a domineering role over Tsukimori.

Note: Original language image is not available.

Nana, an apathetic 24-year-old with nothing much in her life, suffers a car accident and wakes up in her 14-year-old junior high body. As she lives through each day, she starts to remember things she buried deep in her memory, and she can now not remember being involved with her older sister, whom she deeply admires, and her sister's first love, a senior at her school.

Explore the lives of the famous-yet-not-so-famous people of history; such as Nikola Tesla, Ty Cobb, Typhoid Mary, the woman behind the Winchester Mystery House, Kou Yoshio, and many more.

Series of one-shots published between 1989-2003, released a tanko volume in 2004 and a bunko release in 2012.

From Houkago Scanlations:

Shiki threw everything away for the sake of revenge. But at the new school where she disguises herself as a male, she meets 4 popular rich guys... Haru (spring) the prince, Natsu (summer) the bishounen, Aki (autumn) the womanizer, and Fuyu (winter) the cold-hearted genius.

What awaits Shiki? And will she get her revenge...?

Hayate and Kusanagi are best friends. They are pretty popular in their high school, and they always attract a lot of "unwanted" attention because of the ambiguous attitude that Kusanagi harbours sometimes torward Hayate. Invited both to a students counsel's sponsored meeting about UFOs, they stumble upon Hayate's little brother, Tatsumi. Hayate gets into an argument with him because he thinks Tatsumi shouldn't be there. And Hayate didn't know ho much he was right, when, after the meeting started: a UFO crashes nearby the student group...

From Brolen:

This is a horror/sci-fi story about a giant planet consuming creature from another dimension that a scientist discovers and mistakenly identifies as a planet. Being given the honor to name it as its discover, the professor chooses to name it after his only daughter, Remina, but when Hellstar Remina is headed on a direct collision course with Earth the world goes nuts and all the people in the city start a witch hunt to kill Remina, thinking she is somehow to blame.

Main Story and 2 extra chapters :

1) Hitomi no Honne (3 chapters)
Hitomi's love life is a royal mess. First the sempai he has a hopeless crush on (Morihito) is getting married. Then while getting his heart broken, Hitomi is harrassed and felt up by sempai's perverted cousin - Tatsuya! Just when things seem like they couldn't get any worse, Hitomi finds himself responding to Tatsuya's touch.

2) Tatsuya no Honne
Flashback to Hitomi and Tatsuya's first meeting told from Tatsuya's perspective.

3) Epilogue to a Happy Ending (Happy End no Tsuzuki)
Continuation of Akira and Daichi's story from Miserarete (+ Tatsuya's cousin, Morihito).

Student still torturing his beloved Sensei and we get to know more about Tatsuya's past (partly from Miyata), that made him who he is. Will Hitomi still love (and understand) his student after hearing his story?

From Sound of Jewels:

Trapped into two different worlds, a young boy and a young girl are trying to runaway of where they are. But it's like something kept them captives and there's no way for them to escape from these strange worlds...

Some staircases are not meant to be traipsed upon.

The members of the Takashiro family share a terrible curse: only human blood can quench their thirst. Sent away after the death of his mother, Kuzuna Takashiro remained blissfully unaware of his 'condition.' When Kazuna's teenage hormones begin to rage, his uncontrollable bloodlust suddenly rears its head...

By day he is a beautiful honor student, but when night falls, the sexy and lewd "Maya" appears. Even though university student Kazuma wants to deny the existence of Maya's double life, he gets drawn in by him. Before long, Kazuma finds out that a young congressman, Tanabe, is manipulating Maya like a puppet, and is using him for the government...

To what distance would you go for your one true love?
In a future filled with a boundless potential for interstellar peace and prosperity, Mikako joins a research team to explore the recent contact between humans and alien races. She ventures out into space, leaving behind Noboru, the one young man she loves. As she travels deeper into this new frontier, her only connection with her boyfriend is through cell-phone text messages. But the years pass, and Mikako barely ages in the timelessness of space--while Noboru grows older and considers moving on with his life.

In this timeless romance between star-crossed lovers in the most tragic of settings, there are some places man may not be ready to go.

From BLU:
From modern-day tales of romance in Seattle, to eerie stories from historical Japan, to Yoshinaga-sensei's depiction of the class conflicts that fueled the French Revolution... In these unforgettable tales, there's a little something for every BLU fan!

And perhaps best of all, the characters Claude and Antoine (a young aristocrat and his butler) are introduced in this volume. Catch up to their later adventures in Fumi Yoshinaga's 'Lovers in the Night'!

Stories:
1. Truly Kindly
2. True Tenderness
3. A Today Completely Different From Yesterday
4. Pandora
5. Chinoiserie
6. A Butler's Proper Place
7. A Day in the Life of an Aristocrat

From Dazzling Scans:

Kazusa, a young high-school girl, is killed instantly when a car crashes into her as she was crossing the street. As a ghost, she watches her friends' reactions to her death—keeping a close eye on Miharu, the boy she was in love with before she died. However, she discovers that he was in love with another girl Okabe Ranko... but can Okabe see Kazusa's ghost when no one else can?

Troubled by her abusive mother, Shiori is undecided about her future. The only thing she knows is that she wants to always be with her best friend Yukiko. That is, until she sees Yukiko do something unusual one night...

Mikage has just arrived at a new school. But why can't he remember anything about his life before the moment he set foot in the school grounds? His classmates, while appearing ordinary enough, all possess strange habits and weird personalities.

Soon after, our bewildered protagonist is summoned by one of his teachers, who claims that Mikage has the power to influence a 'parallel universe' - and that his interactions with his classmates will decide the fates of the inhabitants of that universe. Though initially fascinated, he soon finds out that these 'powers' do not bode well for his new school life...

Jun receives a phone call from his wife Manami telling him that she's about to give birth, while he's at the apartment of his mistress Yoko. He promptly breaks up with his mistress and runs out the door to rush his wife to the hospital.

Unfortunately, the elevator becomes stuck on the way down, and he's trapped with three strangers. To pass the time, they decide to share their deepest, darkest secrets. Jun can't help but be horrified by the criminal acts these seemingly normal people are capable of committing... and getting away with. Will a rescuer ever come, or will they be stuck in this nightmare elevator until they all die?