A boy trying to commit suicide finds a zombie girl that tries to stop him from killing himself.

Himoto Sora is a transfer student with a sense of justice and dreams of becoming a knight. Upon arriving at Utopia Gakuen, she learns of a virtual reality-like game played by the male students in which they use girls as weapons in battles for status and treat them as commodities. Seeing one of these girls being abused she steps in and through some sort of error unwittingly becomes the first female participant of the game.

Republished in 2017 in a 3 volume omnibus
1) Shitsurakuen - Hangyaku no Otome no Shou
2) Shitsurakuen - Shinai no Otome no Shou
3) Shitsurakuen - Rakuen no Otome no Shou

From Sumie:

A love story between two souls separated by their stations in life, in the form of a tattoo.

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"Even if we stopped seeing each other, my soul would always be with you."
A man visits a certain tatoo artist. A vivid love story of surreptitious, yet intense longing of two souls.

From inmeliora:

Eight years ago, Mio, the princess of the White Kingdom, and Sakuya, the second prince of the Dark Kingdom, became friends when she got lost in the forest and Sakuya helped her. They were friends until one day, three years ago, she was sucked into a hole and went missing, and Sakuya is determined to find her. In the three years since her disappearance, he became friends with her older brother, Rui, the second prince of the White Kingdom, even though their two kingdoms don't get along. One day, while joking around, a hole opened up in the sky and a girl fell out of it. Sakuya had dreamed this would happen, but who is this girl and why did she fall into heaven?!

In this story set in the early 1980s, a young man dreams of becoming a renowned comic writer in years to come. His name is HONOO Moyuru. He has no money, only a dream. Then, he feels overwhelmed by his lack of ability, and buys some sake, although he has no head or stomach for alcohol. This is a tortured elegy for any dashing young art student who spends his days careening around in burning ambition. Note: Was nominated for the 3rd Manga Taisho Award in 2010 and for the 19th Tezuka Osamu Cultural Prize in 2015. 

From Evil Flowers:

1) I should have...
En Asakura often has the same dream lately. She dreams of a boy asking her to kiss him. Her dream is connected to a painful memory from her high-school life, when she felt in love with a boy named Maru. When he asked her to kiss him, she refused, and now she's regretting it. Not to mention that the boy started to date another girl after that incident.

En is now in university and is trying to find her life partner through goukon: blind group dates. What will she do when a boy with the same name as her past crush asks for her number? Will she refuse and regret it again?

2) The Realization Of Happiness
Continuation of the preview chapter.

3) After School Kiss

4) Tell Me You Love Me

5-6) My Friend's Boyfriend

A strange phenomenon where one is transferred back to the moment right before something life-threatening occurs. This continues to happen until the cause of the threat is erased. It is as if somebody is forcing Satoru to stop it from happening. Then one day, everything is changed. What truths are revealed when Satoru comes face to face with his own past? How will they affect his future?

Boku dake ga Inai Machi: Re (Gaiden volume) is considered volume 9 of the series

Note: Was nominated for the 18th Tezuka Osamu Cultural Prize Reader Award in 2014 and for the 7th, 8th and 9th Manga Taisho Award between 2014 and 2016. Also nominated for the 40th Kodansha Manga Awards in 2016.

From Stage Storm:
Seiko is a normal girl with a tendency for daydreaming, and Yoshito's a fairly sensitive, subdued boy. They've been close friends since grade school, and now that they're in high school, their feelings for each other become complicated. Though all of the diverse array of characters in the story seem to see it as plain as day, Seiko does not realize Yoshito would like to be more than friends.

From Aerandria Scans:

Shiro is a white crow. Because of his unusual color, he's often bullied by the other black crows. One day, he's hurt badly because the others ganged up on him, and he was saved by a girl. Moved by the girl's gentle heart, Shiro asked a devil to let him turn into a human. However, there's one condition: Shiro will have to do at least one bad deed a day, otherwise, his body will crumble. Can Shiro really fulfill this contract?

A one-volume work containing 4 stories total, including the title work "Shiranami no Illusion"

- Shiranami no Illusion
Ryo is a boy who loves flirting with girls. One day, he met a beautiful girl named Touko by the beach. Ryo is soon deeply attracted to Touko, but because of an incident where her fiance died in a tragic accident, Touko locked up her own heart. How is Ryo going to help Touko leave her sadness and pain?

From Wasurenagusa:

As a child Tanabe was always tagging behind Haruyama, but in high-school after he became a ping-pong ace their relationship is gradually getting worse. Who is the one tagging along for real and why is Tanabe always so quiet? A touching and yet funny story with ping-pong as its background.

This volume also contains a one-shot about one very interesting hairdresser and a two-chapter story about a dentist and his fated client.

From Tokyopop:

Legends say that when it snows, it is because the snow princess is crying. A collection of five tragic tales, all connected by the bond of snow. Shirahime-syo is CLAMP's tribute to traditional Japanese form and storytelling.

From Aerandria Scans:

This series is the continuation of Ookami ga Kuru! In order to investigate the strange phenomenon occurring in Northern Bayern, Germany, the church (KIRCHE) have dispatched the slayer Sirius. He rescues a young woman, Beate, who was being attacked by zombies. However, as the two attempt to leave, they’re attacked by more zombies.

From Fateful Encounters:

Based on novel by Kaminaga Manabu. Shinrei Tantei Yakumo, aka psychic detective yakumo, tells a story about a college student, Saitou Yakumo who is born with different eye colors. His red left eye gives him a special ability to see ghosts and spirits. He believes ghosts and spirits are bound to earth because of a certain 'cause,' and simply eliminating that 'cause' will let those spirits rest in peace. Being asked for help by Ozawa Haruka, they begin the investigation together.

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Includes an unrelated side story called Pen x Pal in vol.1.

In the continent of Polyphonica, spirits materialize in the world, surviving on the music that is played by humans, and live together with them. While the spirits don't appear often, some spirits have enough power to materialize in human or animal forms and live together with humans.

Dantists, who play special music called "Commandia," are widely respected in this world. They are usually in contract with powerful spirits. The story of Shinkyoku Sōkai Polyphonica Eternal White revolves around the new Dantist, Snow Drop, a maid who cherishes her Ojou-sama more than anything, and her Contracted Spirit, Blanca, who is also known as the famous Contra Bass, Eternal White.

On his way home from picking up a rings for himself and his lover, Fuji Takahiro is hit by a car. His resulting amnesia degrades his live-in lover Kotou Tarou to a mere flatmate, and a series of misunderstandings threatens to tear the couple apart. Tossed around by desperation and confusion, can Tarou and Takahiro rebuild their once blissful relationship?

In this country, every person has to be matched up with a partner. Partnerships are made around when you turn three or four. The doctors decide who gets paired together. One person acts as the 'supplier.' The other as the 'receiver.' It is impossible for a 'receiver' to continue to live without periodically being given power from the 'supplier.' And in the same way, it is imperative for a 'supplier' that a 'receiver' accept some of the power generated within their body. This 'power' can't be made anywhere other than inside a 'supplier's own body… So for the 'receivers,' we 'suppliers' are completely indispensable...

Kei is an Omega who dreams to be married to a rich, handsome and kind Alpha. So he polishes his skills in order to become a good bride for his future mate. However, his body is a bit special cause drugs that suppress an Omegas heat doesn't work on him. So he relies on his childhood friend Tsugitsugu who is a Beta, whenever he is in heat. How long can Kei keep this relationship with Tsugitsugu?+

Mikeya Arata, single, works everyday in the university co-op program. His main job is the maintenance of computers. When he finishes his job, he goes straight home and sleeps; and everyday is a repetition of that. But after he is romantically confessed to, this routine of his is on the verge of collapsing. He would doubt his partner’s feelings due to his lack of self-esteem, but now….

From Fujoshi Bitches :

Kumagaya gave up his dream of becoming an athlete and found himself a job as a mover. At his workplace, he reunites with Ino, a schoolmate from high school. As usual, Ino is capable though arrogant, and is a weird guy that hides the fact that he dotes on a hamster. Kumagaya didn’t want to have anything to do with the people who knows the past him, but for some reason, Ino likes to get involved with him…?!
A clashing love with two disagreeable fellows. ❤