Alma is born a witch after her father makes a deal with the demon Mephisto. She seems to be able to travel through time and goes back to the middle ages in Europe, the Mayan / Aztecian time as well as the Roman ancient time and Nazi Germany.

[From ShoujoMagic]:

"The beautiful and most mysterious poison 'flower'...is tempting every part of me..." Michiru loved him from the bottom of her heart... because she loved him... and longed for him... but now Misaki is slowly losing hold of Michiru...!?

From Shoujo Manga Maniac:

Whenever she sees a boy of her type, Ai gets excited and reckless. Because of this animal instinct, she hasn't had a boyfriend for fifteen years. However, Daiki, who is handsomest among students, wants to date her. She thinks that if she missed this chance, no one would be waiting for her any more. Is it her last chance!?

From Exiled Rebels Scans:
Takamine finally got his dream job as a high school teacher with his crush , Natsume. Now the two of them will be together, not as teacher x student but as teacher x teacher from now on. But does Takamine have an ulterior motive for becoming a teacher?

1-3) Furachi na Kare no Shitsukekata
Sayuki Isumi, salaryman, got drunk one night because of some trouble at work and bumped into Aya Okimiya, who is one year his junior from university. Okimiya who admired his sempai for quite some time from afar could not help himself anymore and ended up embracing him but can he keep Isumi by his side?

4) Milk Taste Honey
Kaidou-san is a salary man who comes every day to the cafe where Hanabashi Ritsu works. He admires the part-timer from across the room, whose cool exterior entices Kaidou-san. But truly, there is a cute, blushing Ritsu behind the cool beauty on the outside...

5) Welcome to the University of Love
Aizome Riku enjoys napping on the school's roof, but when he falls from a tree tryng to climb down Kairi is there to catch him. The two become fast friends, but Kairi's three bodyguards who follow him everywhere soon grate on Riku's nerves. Can Kairi convince Riku that his 'like' is more than friends and capture his would-be uke's heart?

6) Furachi na Kare no Shitsukekata Extra

1) Aimai na Kankei (Ambiguous Relationship)
Satoru, a single businessman, had lived alone since high school. One rainy night, Satoru picks up a high-school male stranger and give him shelter. Little does Satoru know that this high-school boy might be his dream filled escapade. After all...

2) Yasashiku Toraete (Capture Gently)
In this sequel to Aimai na Kankei businessman Satoru is living with his highschool lover, Reiji. Reiji's brother is trying to convince him to come home. Will Satoru be able to hold onto him, or is letting him go the right thing to do?

3) Itsuwari no Daishou (False Compensation)
When teenager Mahito sees his father and his father's secretary Kazaoka having sex, Kazaoka is sure that Mahito hates him. But then Mahito's father dies and he takes over the company and Kazaoka!

4) Man On
Oono will do anything to get Nagumo by his side.

5) Kodomo Ijou Otona Miman (More than a Kid, Less than an Adult)
15 year old Kotarou still goes to his childhood pediatrician when he's sick. Or does he have another motive?

6) Sweet Restraint
Atsushi's father's company is in trouble and Fukami will help, but only if he gets Atsushi.

7) Miracles Don't Happen
When Oosuga's internship is up the salary man Andou who Oosuga's been lusting after invites him to his place for the night. Oosuga's in heaven, but then Andou gives him money?!

8) Mijuku na Kareshi (Inexperienced Boyfriend)
Continuation of Miracles Don't Happen.

A collection of 4 stories:

1) Tempting Kiss
A smart girl tries to confess to the guy she likes, only to overhear him making fun of her. Years later she's given up on guys, but a hot bad boy wants to catch her eye.

2) Wet After School
Fujimori Shiho is a teacher with a troublesome student. Takeru Kagura needs supplementary lessons, but he has his own ideas about what "Shiho-chan" can teach him, and what he can teach her!

3) Making Feelings
Midori has been dating her boyfriend for two months, but sex still hurts! Talking to her girlfriends about it, she realizes the guy behind her is Asagi-san, her demon work supervisor and he heard the whole thing!

4) Jealousy (Scandalous)

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.

From Sound of Jewels

several oneshot

Story 1- L-DK (extra chapter) [Watanabe Ayu]
Shuusei's sister show to Aoi how to hypnotize someone...
And guess who will act as her guinea pig...?
Story 2- Yamato nadeshiko shichi henge (extra chapter) [hayakawa tomoko]
Story 3- Daidai Days [higuchi megumi]
Story 4- Aguriko [ishiko]
Story 5- Oshioki wa necktie [nakamura matsucha]
Story 6- Hakuchuu nemurihime no Yuutsu [rokurokurei ijimi]
Story 7- Koharu biyori [higuchi chiho]

From Midnight Scans:
On Maika's 16th birthday, the girl is given a Shikigami named Homura, as it is the Shikigamis' job to protect the Onmyouji. But who would have guessed that Homura gains his powers from having sex...? And that the perverted Homura keeps making Maika's heart race...!?

Jae is a Korean student who came to Europe to study art. Things aren't going her way, but she's determined to make it. One night, her friend Melissa brings a drunk guy to her apartment and asks if he can stay there for the night. Jae doesn't like it, but agrees. That night she has a dream that the drunk guy drinks her blood... which, of course, turns out NOT to be a dream.
Jae is surprisingly unafraid of the vampire, Michael, and starts to paint his portrait. The two strike an unusual deal: if Jae allows the vampire to feed on her, he will pose for her. His beauty and alluring preternatural energy could be exactly what Jae needs to finally succeed as a painter.

Contains the side story: Scissors

From Exiled Rebels Scans:

Shina Ayumu is part of what other college students call “the flashy group”. However, where everyone thinks of him as bright, cheerful and always smiling, he is hiding a secret that only his high school classmate, Hayase Souta is aware of. Since their first year of high school, somehow Hayase has always ended up meeting Shina after a break up. So now Hayase sees Shina only as a big crybaby!

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 Yayoi, a chemistry expert; and Kakio Hazuki, an agile fighter, good at combat and sports. And there is nothing that cannot be stolen by "MOUSE"...

1) That's A Secretary's Job
Whenever college student Shirou gets in trouble, his father's secretary Kawata is sent to deal with him. But Kawata's punishments are all sexual.

2) Let's Train More Lewdly
Kawata is being cold towards Shirou.

3) A Greedy Right Hand
A young tutor gets involved with his student.

4) Fascinating Counselling
Miyamoto the psychologist has a patient that seems to imagine Miyamoto and him are lovers. The patient even goes as far as describing their imaginary love making!

5) 10 Million Dollar Lover
Jirou sees a sad man wandering the streets in the rain and invites him over. After a year of living together, the man's secrets are finally revealed.

6) I Love You Firmly Bound
23 year old Tatshuhiko likes to fantasize about S&M and one day his 17 year old cousin, Makoto, discovers his secret.

7) The Secret Love Affair in the Secretary's Office
Shirou gets more than he bargained for.

Honami's the first boyfriend Shouji has ever had, but he knows that Honami had a "jerk-off buddy" named Terumi back in middle school. Terumi never went on to high school, instead dropping out to work in his parents' gas station, and since then he and Honami have lost contact. Though he tries to play it off, Shouji instantly realises that Terumi means a lot to his boyfriend.

Determined to make the acquaintance of the guy Honami's so enamoured of, Shouji pretends he wants to join up with Terumi's biker gang. But as they spend time together, the curiosity and rivalry between them begins to evolve into something else entirely...

1) Dreamy Pavilion
Like the famous Chinese beauty he played on the stage in the Peking opera "Farewell My Concubine", Hien longed for a love worth dying for. Will Seijo, a foster son of an eunuch, fulfill Hien's wish?

2) Harem for Two
Upon founding their nation, Genko-sama suddenly declared of building his own harem, what will Josei do?

3-4) Resigned Decision
Comedic one about a yakuza-wannabe and a policeman.

5) Pavilion of Destruction
Prequel oneshot of the merchant Saimon (Cimen in this manga) of Kinpeibai Kinden Honoo no Kuchizuke

From Infinity Scans:
Hiyoko's childhood friend, Bambi, had an idiosyncrasy as a child--his ears would grow like horns when he got frustrated! Moreover, he used to only bully Hiyoko. One day, unexpectedly he appears as a transfer student at Hiyoko's school, and...!

Meet Tominaga Komaki, a 20-year-old university student and landlady of an apartment. Meet Ichimatsu Kusuto, one of the hottest students from the University of Mikado who strives to avoid his stalker. When Kazuji meets Maki, his new landlady, will sparks fly between the two?

Ryu is sleeping with his college professor, but doesn't feel loved, so he decides to kidnap his professor's son, Hayato, out of revenge. As it turns out, Hayato's relationship with his father is not very good, so he winds up living with Ryu.

The doujinshi called "Nezi no Kaiten - EX", (done by the mangaka) begins when they start living together. It was released inside the book -6mm no Taboo.