Based on the visual novel of the same name. In 1986, between October 4th and 5th, members of the Ushiromiya family gather on the secluded island of Rokkenjima to discuss the division of the family's massive fortune upon the impending death of the family's head, Kinzo. However, when a typhoon traps the eighteen people present on the island, six people are mysteriously murdered. The remaining people struggle to survive as the murders continue, supposedly by the will of the legendary Golden Witch, Beatrice.

Other manga:
+ Triage X manga
+ Sidonia no Kishi manga

In Fall 1986, Battler Ushiromiya and eleven of his family members are reunited on Rokkenjima for the purpose of discussing how the head of the family's fortune will be divided upon his impending death. When a typhoon hits the island, everyone is trapped and murdered supposedly by the Golden Witch in her efforts to revive herself. When Battler refuses to acknowledge the existence of magic and witches, Beatrice the Golden Witch, appears before him and challenges him to save his family by proving that neither she nor magic exists. To save his loved ones, Battler is forced to observe the events of Rokkenjima again and explain how all the murders occurred without magic or otherwise submit to Beatrice and acknowledge her existence as a witch.

Fall 1986...in Rokkenjima, a private island owned by Kinz? Ushiromiya, eleven of his relatives arrive for a family reunion. He is dying and children want nothing more than to split the wealth he will leave behind. But as a storm traps them on the island, the riddle of Rokkenjima's legendary golden witch begins to take the lives of several people. Who can solve the riddle and gain the gold & the inheritance? Will the golden witch truly revive? The story is divided into episodes: four "Question" arcs. Each episode keeps the same main characters, but ends in a different way. However, each episode gives valuable answers, hints, and clues to the previous one, while at the same time bringing forth even more mysteries.The question arcs are: Legend of the golden witch, Turn of the golden witch, Banquet of the golden witch, and Alliance of the golden witch.

From Yen Press:

Time holds little meaning for Beatrice the Millennial Witch. Replaying the events leading up to the Golden Banquet again and again only gives her more opportunity to play with her new favorite toy, Battler Ushiromiya. The boy's will to resist the witch remains strong as the curtain rises for a third time on the Ushiromiya family's annual reunion. But as Beatrice pulls more and more players into the game, the strain on Battler's defenses is evident. Do the other members of his family hold the key to solving the witch's riddle and sealing her defeat?!

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

This chapter focuses mostly on Battler's sister Ange, and her life twelve years after the massacre on Rokkenjima. The existence of magic is heavily implied in this chapter. Many new characters make their debut, such as Siesta 00, Gaap, and a number of humans. (Wikipedia)

From Yen Press:

Twelve years after her loved ones were brutally murdered at the annual family meeting, Ange Ushiromiya, now eighteen, is the sole heir of the Ushiromiya family. Ostracized by her peers, Ange seeks companionship in the pages of a diary left behind by her cousin, Maria. The diary offers a precious glimpse of Maria’s world-her struggles at school, her friendship with stuffed-lion Sakutarou, and her fascination with magic. It’s as if the diary contains the last remnants of Ange’s dear cousin…and an opportunity for Ange to discover the magic within herself…

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 cross-over manga featuring characters from Higurashi no Naku Koro ni.

Part of the Umineko When They Cry franchise. This side-story takes place outside the main story.

The story expands on the use of the Purple Declaration introduced by Bernkastel in Twilight of the Golden Witch. The Red Truth still applies in this game even though there are lesser than usual games. Knox's rules are stated in red to show that it is valid in this game.

A compilation of additional tips written by Ryukishi07 outside of the games. Several of the stories are humorous in tone, but the more serious ones may be considered canon.

Even though he’s such a good-for-nothing…
Why is my heart racing like this!?

Hazuki Umi is a caring middle school student, beloved by everyone who lives on the island.
In contrast, Inoue Fuuta has done nothing but be lazy at home ever since he moved to the island to open up a guesthouse.
An overwhelming age difference of 15 years lies between them.
He has no delicacy, he isn’t reliable at all…
And yet, his words always manage to make her heart race, her face flush---

The age-gap romance between a pure middle school girl and a boring 30-year old man begins now!

Kaname Okiura, a student of Prefectoral Umineko Shougyou High ("Umisho" for short), joined the school's swimming club in order to learn how to swim, but the club is filled with weirdos, let alone teaches him swimming. Then, a sunny, happy-go-lucky girl named Amuro Ninagawa who was transferred from Okinawa joined the club. Her extraordinary underwater speed and unorthodox swimming style (plus her personal habit of nude swimming—a powerful magnet to teenage boys) surprised every club member, especially Okiura, because she reminds him of a mermaid-like creature he saw only once in his early childhood.

Contains the original oneshot Umwelt
A genetically engineered girl escapes from her home and the doctor that created her must pursue her with the help of military personnel.

I thought we weren't living in the same world but then I had to play the perfect girlfriend for that popular boy?! No wait! Don't be that kind with me!!!

(Also included in the Sweets Fortune Telling Anthology as Boy of Chocolate story)

"UN-GO" is a full-fledged detective story about a detective and handsome boy combo who tackle the world's most difficult crimes together for reasons of their own.

The profession of private detective fell out of favor long ago, and yet, that's how the young man, Shinjurou Yuuki identifies himself. With his superior deductive powers, Shinjurou solves various challenging cases. Meanwhile, Inga, an attractive young lad, serves as Shinjurou's "buddy". But contrary to his cute looks, he's a sharp, arrogant rogue. Why Inga sticks with Shinjurou is as yet unknown.

The setting of the story is a postwar, future Tokyo that still bears the scars of war. Ruling the land is Media King Rinroku Kaishou, who through politics and industry has the communications infrastructure under his thumb. Kaishou has used a clear head and the massive amount of information at his fingertips to lead to the solution of a great number of cases.

But there's an underside to Kaishou's brilliant deduction work, which is that Shinjurou Yuuki, "the Last Great Detective", is the one who actually uncovered "the truth" in those cases. However, the public doesn't know this and thus refers to Shinjurou as the "Defeated Detective". Still, Shinjurou, together with Inga, can't help but search for the truth.

When Ryuu Kagaya tries to befriend the boy in the next seat to his, honor student Yoshito Naruse, he's shot down. Only after Yoshito visits Ryuu's workplace does he think they might be friends. But Yoshito's brother might have something to say about that...

A girl being anxious of her relationship with her boyfriend since there is still no progress.

A former boys' school recently integrated into a co-ed high school. Shinya Sanada spent the beginning on his high school life in a hospital, so he arrives to what he thought was the boys-only dormitory a month late. What's waiting for him is his former childhood friend, although he's much more womanly than he remembers. Shinya decides to adapt to his new life at school.

Taehyun Choi lives with his sister Hakyung Choi. You could say they have a normal life. On the one hand Hakyung has a good job and is successful, however Taehyun isn't good at studying.
His life takes a drastic change when he accidentally learns that he and Hakyung aren't siblings. Which is why he decides to confront her, but then she suffers a serious accident and loses her memory.
This is where everything will change, because those feelings of kinship will become much more important.

A young man finds and returns a lost wallet and cell phone to a beautiful young lady, thus begins the destined relationship between two strangers. Sound typical? Well then, how about making the young lady the young man’s future homeroom teacher, and give them both a twisted sense of right and wrong. And just for kicks, let’s have the young man help himself to a self proclaimed reward from the lost wallet before returning it… but of course, this scenario wouldn’t be complete unless the young lady was very unforgiving when it came to teaching one of her students a lesson on morals. (Source: Infinity Studios)

Sequel to “Unbalance x2”. 25-year-old Nah Hae-Young is a high school teacher. She’s pretty popular and well-received by her students, but she has one huge secret… She’s actually in a relationship with one of her students, Myung Jin-Ho! This is her story of trying to navigate her life without allowing too many stirrups from her young lustful boyfriend!