From Yen Press:

Each year, the Ushiromiya family gathers at the secluded mansion of its patriarch, the elderly Kinzo. It has been six years since Battler joined his cousins at the annual event, but their happy reunion is overshadowed by worsening weather and an eerie premonition from his youngest cousin. When their parents’ conversation turns to the division of the inheritance upon Kinzo’s imminent death, Battler and his cousins reminisce about the stories their parents teased them with as children-tales of the witch, Beatrice, who haunts the island’s forest. But when people start dying unnatural deaths, Battler can’t help but wonder…

Question Arc
1. Umineko When They Cry Episode 1: Legend of the Golden Witch
2. Umineko When They Cry Episode 2: Turn of the Golden Witch
3. Umineko When They Cry Episode 3: Banquet of the Golden Witch
4. Umineko When They Cry Episode 4: Alliance of the Golden Witch

Answer Arc
5. Umineko When They Cry Episode 5: End of the Golden Witch
6. Umineko When They Cry Episode 6: Dawn of the Golden Witch
7. Umineko When They Cry Episode 7: Requiem of the Golden Witch
8. Umineko When They Cry Episode 8: Twilight of the Golden Witch

The side story arcs are:
- Umineko Biyori
- [m]Umineko no Naku Utage ni: Tea Party of the Witches[/m]
- Umineko no Naku Koro ni Episode X
- Umineko no Naku Koro ni Tsubasa
- Ougon Musoukyoku
- Umineko no Naku Koro ni Shi: Forgery of the Purple Logic

A robot with a heart, and the scientist who saves her...

Note: scanlators had a typo when translating the name.

A series of loosely-connected vignettes, each lead to the next by a stray thought. A young hit-man chased from his home; a dropped key to a bloody room; a meat-locker to hide a corpse; the watchful eyes of crows; a criminal's chance at salvation; the sight of music in the air. Where will this story take you, and in what place will it end?

Those in serious debt to a certain man can either pay the price or join a certain game, a "gamble" as he likes to put it. To win, you must acquire points by defeating the other game participants. What will happen to the players...?

In the Risou no Koibito series:

V.1 - Risou no Koibito (Ideal Lover)

Riku suffered a traumatizing experience after coming out and has since chosen to avoid love. That is until the super-confident and dominating pretty-boy, Yoshimi, walks into his life. He deliberately targets Riku's weaknesses, but what are his true intentions?

This is a story of discipline, guidance and affection that fills both the heart and body of the handsome and brutish Yoshimi and the naturally timid Riku.

6. Furueru Te no Saki (Before Trembling Hands)
They were friends in high school. Now that they are university students, Kou and Ichi have become a pair of rather dysfunctional lovers. Kou enjoys making Ichi jealous and often keeps him at arm's length. But what will Kou do now that a new kid has captured Ichi's gaze?

- Blissful Sin

V.2 - Risou no Yuuwaku (Temptation of an Ideal)

“Omniscience” is a sci-fi graphic novel. Its story is set in a hypothetical future where augmented reality has invaded our daily lives, thanks to contact lenses superimposing virtual characters into reality. One of these characters, Ingeborg, is particularly popular; she is like a second mother for generations of children, devoted and insightful. She is, however, disavowed by more and more of her subscribers – authorities suspecting her of being more harmful than beneficial to their well-being. This is what two teenagers are going to discover when they help a young fellow from their boarding school to find his parents, who abandoned him a few years earlier for an unknown reason…

Miroku Tachi was a promising student until he dropped out of college. Now, after months spent as a NEET, he has hatched a plan to help his sister, himself, and the whole world... by murdering someone.

Based on Crime and Punishment by Fyodor Dostoyevsky, but in a modern-day Japanese setting.

From Paradise Love Scanlations:

Nanao Shuuji left his hometown where his family runs a well-known chain of supermarkets, and became a part-time teacher at a cram school. One day the son of his father’s mistress, Takatou Kazuomi, appears before him. Shuuji once confronted Kazuomi’s mother, and also injured Kazuomi as well. Kazuomi made use of Shuuji’s weakness in order to keep getting financial aid from his father, and ordered Shuuji to help him, while blackmailing Shuuji with a particular photo…?!

The story is set at Shishidou, a school attended by rich and elite people. Tomu Shirasagi, a gambler, is a mysterious new transfer student who has come from a public school (instead of a prestigious private one) and faces the elitist environment. There, he declares a challenge toward any student and claims he will bring to the ruin the whole school through a series of gambling matches. Nobody knows why he has come to that school or what the real motivations behind his actions are.
During any match, Tomu shows off all of his unique coolness and ability.
He employs a wide range of tricks, both psychological and physical, to ensure his victory. In any game, you will constantly ask how he's planning to win, why he's really doing certain things, and what's really going on. At the end of the matches, the tricks are revealed, and they all work in real life, even if they do require one to be highly skilled or lucky in order to perform them.
The story centers around the various matches he undertakes and the interactions between the various characters, like Mika Shishidou, the beautiful granddaughter of the school headmaster, who is highly intelligent but contemptuous and superb, or Abidani, the vampiric looking dorm superintendent and main villain (for now) in the series, who has a sadistic personality and whose goal is to make Tomu leave his school (or to get him killed).
As the story unfolds, more about Tomu's past is revealed, leading to unpredictable turns of events.

Kenzaki Makoto, a debuting sculptor, was arrested as the serial killer of the Yokohama Line series of murders. He insisted that he was innocent but was sentenced to the death penalty. He was executed 11 years after the crime. But when he reopened his eyes, by a twist of fate, he had returned to 11 years ago, 25 days before the crime was committed. Burning with the desire for revenge against the real murderer, Kenzaki begins to take action. The only one he can trust is HIMSELF. The crime suspense story of two selves fighting against fate unfolds.

A one-volume compilation of three stories meditating on work, identity, and purpose.

The first three chapters contain "Psychic Training," the story of a young girl who desperately wants to become a psychic.

The fourth and fifth contain a retelling of "Bartleby the Scrivener."

The sixth contains "Yoru no Taiko", the story of a young woman meets the man of her dreams.

Their date is going well. He wishes for more. She defers. He presses. She decides to trust him. She tears off her finger...

Two volumes of the author's best oneshots.

Volume 1: Mushi to Uta (Insects and Songs)

1) Star Lover - The odd relationship between a teenage boy and his uncle's "daughter."

2) Violight - A boy wakes up in an unfamiliar land, with only a strange, ethereal young man to accompany him on his journey to safety.

3) The Kusaka Siblings - A baseball player who's just quit the school team due to a shoulder injury and the adorable robot he adopts as his little sister.

4) Mushi to Uta - The story of a young man who builds models of insects for odd clients, and his siblings. Winner of the Shikitaishou award.

5) Secret - A two-page oneshot.

Volume 2: 25-Ji no Vacances (25-Hour Vacation)

1-2) 25-Hour Vacation - Marine biologist Nishi Otome takes time off and reunites with her brother, Kotaro, for the first time in a while.

3) On Pandora - The meeting between a delinquent named Nana and a strange transfer student at Pandora Women’s College, located on one of Saturn's satellites.

4) The Funeral of the Moon - A genius high school student begins living with a lonely man in the isolated snowy mountains of the north.

Note: Mushi to Uta was nominated for the 3rd Manga Taisho in 2010. 25-ji no Vacance was nominated for the 5th Manga Taisho in 2012. Winner of the Tezuka Osamu New Artist Prize (2010).

N/A

Based on DECO*27's popular Vocaloid song "Mozaik Role":

Megumi Nakashiro never believed in doppelgangers or any of that occult stuff. Sure, she was a member of the occult club, but that was only because her boyfriend Kubohara was in it. However, her view starts changing when her boyfriend suddenly disappears and a girl named Megumi Kokusenya joins her class..

Makoto Naegi is trapped with fifteen other students by a murderous bear! Can they survive when anyone can be a possible killer?

A cat and a wolf live in the woods. The cat sleeps in a birdcage and eats lots of chocolate mint ice cream. But…

A story about two people with mental problems protecting everything they left with their only method, playing ping pong.

With her parents dead or missing, Azuma has been taken into her uncle's family. However her new family has been harshly abusing her, to the point she has become so mentally unstable she developed the rare syndrome of Alice in Mirrorland, which makes her see things that shouldn't be there reflected on mirrors, water, glass, etc.

Everything begins when the things she sees start affecting the real world directly, and the barrier between reality and illusion breaks apart.

Welcome to the world at the other side of the mirror. Welcome to wonderland.

While walking around the streets, Momose stumbled upon his classmate cross-dressing as a girl. Ever since then, he couldn't help but to take notice of him in school..?