Kirishima “Maa-chan” Masao and Kurokawa “Tai-chan” Taisuke have been friends since they were little—both looking out for each other, but when Maa-chan catches his friend being assaulted by a teacher, he can’t help but blame himself for always thinking and never acting on his desire to protect his friend.

Rin Hashiba lives together with her grandpa. One fateful day, while offering a prayer to God at the temple, a demon named Char appears before her. Seeking the blood of a virgin, Char is lewd, mean, and quite full of himself. He may act high and mighty, but in reality, he's very loving and kind. Even though she knows it's forbidden, Rin's body and mind are bound to fall into the demon's clutches one day...

from Renta!

The inexorable girl who aims to be a champion; Jain! and the innocent boy who loves her, Tae jin! Their challenges on the road to championship and an unfitting summer-like love story. -from Naver Webtoons Please address this work as a Manhwa (Korean word for cartoons)

From Yen Press:

This time travel period fantasy steeped in black magic is one of the newest works to come from the pen of Kaori Yuki, master of Gothic suspense. When Sorath is miraculously saved following a great earthquake and taken in by a sinister baron, he becomes ensnared in not only a romantic triangle, but also the dark secrets of the estate that becomes his new home.

Mu Qian Ran, a sixteen year old girl, who had always set her heart onto studying the art of Chinese medicine, is excited as she has been accepted into her first choice of college, Yan Huang Advance technical school! At the same time, due to a mysterious portrait of a girl that no one could tell when was it drawn, Qian Ran is able to see illusions of fire. She ignores the incident, but this would start the unraveling of a great secret.

This is the one-shot story of two newlyweds after they get married.

The story starts with the day when Joon Ho is about to propose the girl he loves, Ahn Seo Young but gets a heart attack and ends up in hospital. Lying in hospital bed when Joon Ho opened his eyes he saw a scary face who called himself A Dokkaebi (goblin). The Dokkaebi explains him how he ended up in hospital. The dokkaebi (goblin) once known for its nature of playing mean tricks on bad people and rewarded good people with wealth and blessings tricked a young couple (Lee Yeon and her fiancé Jo Won Ho) who were about to get married to play a game. The game had few rules: #Rule1: To prove he really loves Lee Yeon he will have to find where dokkaebi is hiding Lee Yeon within 20 mins after the game starts. #Rule2: If he fails to find Lee Yeon, she will die. #Rule3: He cannot quit the game even after their death so they will have to take birth again and in every birth they will have to try and find Lee Yeon to win the game. #Rule 4: He will have to remind her how the story started or else he will not be able to save her and she will die. #Rule5: He will have to finish the game before he is 29 years old......If they are unable to recognize each other before that one of them will die. #Rule6: He will have to find the one who knows how to end the game without any of them getting hurt. The dokkaebi (goblin) has been playing this game for years now but no one has been able to win against him. Will Joon Ho be able to find the way to win this game. Will he and Lee Yeon remember who they are will they win the game?

Legend has it that on the last day of every year, demons and evil creatures would create havoc. People named this as "Nian". On one snowing day of this day, a pretty young man with long silky hair picked up an abandoned baby and named her as "Xue".

15 years later, Xue has grown up to be a young lady. One day, a young man appeared and told Xue with a gentle voice that could melt the coldest ice, "I've been searching for you.. for so long.."

Eric is dying. And holding a secret.When his father helps a girl from his school after her mother died, his life turns around. He doesn't want to disappear anymore.

As a baby Jiro was delivered to his foster parents by a massive oni, who said he would return for Jiro in 15 years. When the time comes Jiro must contend with enemy oni, dark cultists, and their minions while attempting to protect both his parents and girlfriend from their depredations. Ultimately he must embark on a journey through the past, future, and other dimensions to embrace his destiny as Shuten Doji reborn.

From StarryHeaven:

A bittersweet story about the life of Kojima Ari and Fujitani Sousuke as they live together in a de facto relationship (without marriage) in modern-day Japan.

But will the choices and mistakes they make bring them together or tear them apart?

From StarryHeaven:
The story about a girl named Tenko who plays basketball. She has a boy (who also plays basketball) whom she has a crush on. One day she encounters a demon, with the shape of a fox. This fox-demon now possesses her body as he looks for his missing tail. As he searches for his tail in Tenko's body, the fox helps Tenko become closer to the one she loves, with magical tricks.

First story. The student is a 17 year-old girl named FUJIWARA Kayo. She loves games. She is always playing her handheld (It looks a lot like a PSP) in class. One day, her teacher, a handsome, but kind of mean-looking guy named HAIBARA-sensei, catches her playing it in class, yells at her, and confiscates it. Grr, stupid Haibara-sensei, always ruining her fun! Kayo can’t stand him, and doesn’t understand why he is so popular with all the other girls at school. Ah, but Kayo is in for a surprise!

The second story. It’s about a shy girl named ICHII Ekko who has a great imagination and a talent for drawing. Every day at school she fills her lined notebook with drawings, complete manga stories, about the people around her. She can turn any minor interaction into a silly shoujo manga plot, complete with sparkles and flowers, and a heroine that looks just like herself. Her notebook is her secret, and it would be horribly embarrassing if anyone found out about it...

Story 3. High school girl Naomi is excited to learn there is a new boy transferring into their class. Until this year, her school was a girl’s school, and even though it’s now co-ed, biys are scarce. So a new boy at school is big news! Unfortunately for Nao, the transfer student isn’t exactly a nice guy. His name is Katsuyuki-kun, and he’s tall and scary looking. He has an aura around him that just screams ‘do not touch! go away!’ He is like a feral cat or some other wild animal. But in spite of this, Nao doesn’t give in. She can tell something isn’t right. Will she be able to make friends with him?

Story 4 is about a guy and girl who are already a couple. Rinako really likes Shun, but he doesn’t seem to want to take their relationship seriously. Even though he know it makes her mad, he is always going out with other girls. When Rinako confronts him angrily, he apologizes, but that doesn’t stop him from doing the same thing over again. In fact, he is always playing tricks on her and doing little things to bother her. But will she still take him back when he goes a step too far?

Finally, the last story is a brief and funny tale of friendship, jealousy, and romance, with a bit of basketball thrown in.

A Kiss, Love, and a Prince" takes place in the same setting as "Even if We're Not Friends," but centers around different characters. The main character is kissed by her sempai, who is playing opposite her in the school play, and freaks out because she always imagined her first kiss would be with a boy, preferably a dashing prince. -- Lililicious

Two stories:

The Moon and the Lake
Kazuna's late grandfather was a writer, and his unpublished novel depicting his private life was found among the articles left by him. He had written down his affection to his lover, while he was a devoted husband. Kazuna felt perplexed, and went to see his grandfather's lover.

Nora in December
Does anyone know where "Nacchan" is? December, ten years ago, Nacchan's house next door burned down. Both parents were safe. Only Nacchan was never found. The body was never found... In the chaos of the fire, only Nacchan... disappeared.

[From PresenceDear]: After his pet rabbit dies, Hiro becomes friends with a classmate who resembles his former pet.

During the basketball club's training camp, some people were caught in a landslide with Kazuki miraculously being the only one to survive. Is there a meaning to his survival or...? In order to erase the trauma from the awful accident, Kazuki becomes addicted to women, while he still looks at the world with cold eyes. It's during this time that he meets a fellow classmate named Mana. Will she be able to change Kazuki's fate?

From StarryHeaven:

Maria is a girl attending a Christian private school. Her mother is sick and in the hospital, her family poor. They live off the money of a man whose identity is unknown to Maria. He is called “Daddy Long-Legs” and he supports Maria and her mother with only one fee: Maria becoming his bride. Just who is this mysterious man? Is it the doctor? Someone she does not know? A boy from school…?

From momiji_mii's livejournal:
A story about a teenage girl whose life has become a living hell because of her alcoholic father. Her mother seems to love her little brother better than her and she feels a lot of pressure because of the circumstances of her family. She's definitely more grown-up than the rest of the girls in her class. She lately feels some sort of connection with one of the bad guys in school, who has been showing kindness to her younger brother lately. He takes both of them to the zoo after the father breaks his promise due to being hungover.

The volume also contains story Cute Girlfriend which is not scanlated yet.

Yuta, a ronin student, moves to Tokyo with hopes to enter university. With no money, he moves into a share house filled with beautiful women.