From Shoujo Manga Maniac:
Ruri is desperate to see the mysterious jewel thief Kaitou Crow. If she becomes a jewelry model, will she be able to see him again when he robs her?

From Mangascreener:

The main character is Leonora, the daughter of an impoverished noble of Padua. She is a beautiful silver-haired, emerald-green-eyed girl and very good at fighting with the sword.

One day, she is forced to marry an arrogant young noble, but she discovers on the day of their wedding that this man intends to use her to become king of Italy because she is involved in an ancient Italian legend: Leonara is the girl shown on "Kakan no Madonna" (Madonna of the Flower Crown), a famous painting drawn by Leonardo DaVinci. There exists a legend that tells whoever gets the legendary sword "Emerald Lion" will unite and rule over Italy. And the secret hiding-place of the sword can be found with "Kakan no Madonna"--that is, Leonara.

In order to find out the truth of the portrait's secret related her and to hide her identity as Kakan no Madonna, Leonara disguises herself as a black-haired boy, Leo, and sets out to find DaVinci. On the way she meets Falco, the blond-haired handsome king of Naples, who is unaware that she is a girl, and becomes his servant.

When she finally finds DaVinci, she hears with surprise that she - the girl portrayed in Kakan no Madonna - is destined to possess the legendary Emerald Lion and therefore to become queen of Italy.

From Aerandria Scans:

Venice, the latter half of the 16th century. Young Legare works as an apprentice to his father, an apothecary, but his real passion is the forbidden art of Alchemy. One day, a fortune teller predicts that he will meet four people with the power to change destiny and shortly after, his father is incarcerated on suspicion of alchemy. Legare, the real alchemist, is forced to produce gold for the person who arrested his father. Follow him through the mysteries of Venice, through his struggles, his encounters with powerful friends and enemies, and his search for the Philosopher's Stone.

A collection of illogical plot lines.

From MyPersonal-scan:
From his late grandfather Viscount Disward, Huey has inherited The Mystical Library of Dantalian, a collection of powerful Mystical Books demonic and supernatural. Together with the dark and mysterious Dariane, they pursue Mystical Books scattered across England. Their adventure begins here.

A young man sits in the inner room of a library, diligently restoring old - but valuable - books to their former splendour. An enthusiastic, upbeat young police officer often comes to him for help with hard-to-solve cases...But what exactly is the mysterious skill that allows this man to unfailingly discover the truth lying in places that even the watchful eye of the Law has failed to penetrate?

From Ciaran Hillock:
The story features Colonial Operator ROCO143, Jolie, finding a paper airplane floating through space. It's a nice story because the paper airplane in the comic represents humanity's dreams and visions of the universe.

In the 2020’s the Japanese female culture was extremely corrupted in the eyes of the first women prime minister. To bring back the beauty of Japanese femininity, she created the Amazon Academy, a girls-only school, on an artificial island isolated in the middle of the Pacific Ocean.

Amesu Kumi just transferred into Amazon Academy to investigate the death of her older sister, Towa, who also attended the school until she died in a shroud of mystery. The only clue she has is the name Burai Sachiko left in Towa’s cell phone. How could Kumi have known that the school literally turns into a battlefield when classes are over; where petite girls beat each other senseless in order to survive?

A cataclysm has destroyed the cities and empires of men and disfigured the spirit of humanity. In this nightmare, it falls to him to descend a mysterious tower in search of absolution. Is the angel correct that he is responsible for the destruction of the world, and what can he do in this monster infested world to redeem himself?

Based on the Saturn/PSX/PS2/Wii game Baroque.

Twice a month, a freight train carrying new migrants arrive in Sakia. According to a new civil rights law, ex-convicts are given the right to voluntarily erase their memory and live here.

As a purification city, this civil rights law began to be expanded to more people. Many of us criminals now living in Sakia only knowing ourselves only as immigrants.

But Estancia, they say we will be forgiven if we reach Estancia.

International man of mystery and master thief extraordinaire, Lupin III comes from a long line of high stakes bandits, all committed to stealing from the rich and giving to themselves. Fortunately, Lupin tends to avoid robbing society's virtuous and, instead, targets some pretty shady characters.
Of course, he partners with some pretty shady characters as well: Daisuke Jigen is an ex-mafia hit man who carries himself with a somber demeanor, his trademark black fedora tilted forward to hide his eyes. Goemon Ishikawa is a cipher-like swordsman with samurai-ish overtones who mysteriously fades in and out of Lupin's exploits. Fujiko Mine is the object of Lupin's affections, but, since she is a thief herself, the duo's romance more than occasionally clashes with their competition for big scores.
The global police force, Interpol, and in particular the tenacious Inspector Zenigata, long to capture Lupin and his gang. Zenigata's relationship with the eponymous master thief is a complicated one, characterized by mutual respect laced with utter disdain. The two have even worked together when it's served both their interests, but they understand that when the crisis ends, they must resume their former wariness and animosity toward each other.

The "self bully" Ban has a normal enough life, and where divorced parents aren't that uncommon, her life becomes shadowed in mystery when her mother, Eun-Joo, suddenly brings their "distant relative" Jin-Whan home to live with them. Ban’s mother would always avoid the topic of her family, so who is this strange boy? Are they really relatives? What torturous secrets does her mother's past hold? And what do the sudden strange happens that follow in Jin-Whan's wake mean? Would a better question not be who is he, but what?

Josh is a 15 years old Bully who have been expelled from his highschool for hitting a student who threatened another student. Thereby he was thrown out of the house by his mom. Now he's trying to get into a federal agency named The SCB.

Hayama Honoka, a freshman at Asaka High School, is an easygoing, unmotivated teenage girl that seems to be unaware that she is more interested in girls than boys. Tomori, her best friend since middle school who is a little violent at times, reminds her that she must pick a club to join at school. Soon after, during the lunch break, Honoka sees a girl wandering the old, abandoned campus building and meets a shy and clumsy girl named Mizusawa Yuzuki who finds fascination in the building that is several decades old although, Honoka only sees it as dirty. Honoka and Yuzuki learn about a small school club called the Abandoned Building club. They meet the vice president of the club, Tachibana Mana, a very passionate and nicely-figured girl, and the two girls decide to join. The club’s purpose is to visit abandoned buildings, rooms or stations and see the beauty of the place that has been forgotten but which is full of history, places that are worn out by time, forgotten by people but filled with hints into the past.

This is a collection of one-shots from Douman Seiman. It contains 36 short stories about serial killers finding love, historical figures brought back from the dead, yaoi fan-girl ghosts making suggestions to the men she watches, and everything in between.

From Twisted Hel Scans:
After losing his memories in a traffic accident three years ago, Haru is now living with Kiriyuu, his saviour and legal guardian. But after a school trip where he and his friends wander in an ancient lab, Haru discovers that there might be more to his lost memories than he thought.

Someone is trying to kill Maejima, the unassuming Archery club adviser and Math teacher at Seika Women's High School. What appears to be pure, dumb luck has gotten him through several attempts unscathed, but he has no clue as to the perpetrator and the Principal would rather not involve the police in what's "surely just a student acting out". With the entire faculty and student body as his suspects, Maejima struggles to discover the culprit before his luck runs out.

Maya is a mysterious young girl who is hired as an assistant to detective Matsunomiya. The Imperial City of the Taisho Era has a mixture of Eastern and Western cultures... What kind of adventure will the two encounter here?

This is the story of several people that possess ESP powers, known as (PSI)

Madam Misa dies mysteriously at the Saturday Night Club. Soon after her death, her young handsome and broke host Hideo opens a similar looking "Host" Club of his own. Where did the money come from? Did Hideo have something to do with Madam Misa's death?