The story is focusing on Yutsuki Onomiya as heroine.

From MangaHelpers:

Sagara Masamune is a manga author who isn't very successful, and it's looking like it's time to end his battle manga. To go for an unexpected ending, he plans to kill off the main heroine, Nina, in a dramatic way. As he works on his manga, he is mysteriously sucked into the pages. Now he's trapped in the world of his own creation, with his protagonists, exorcists Haru and Nina. He doesn't really get what's happening, but he thinks concluding the manga, which involves orchestrating Nina's death, might get him back home. [tethysdust]

Izumi is an accidental pervert with an obsessive uniform fetish. After she breaks up with her boyfriend, she and a few friends decide to take her to a Buddhist monastery to heal her broken heart. What will happen when she meets an attractive monk there and starts to fall for him?

From Nagareboshi Manga:

Anri goes after boys like there's no tomorrow. While going after her current target, Morio-kun, she accidentally gets involved with moody glasses-guy Kiriya. Realizing her opportunity, she tries to force him to go out on a double date with her and Morio-kun. While trying to convince him, Anri finds out that Kiriya has a target of his own--and she wants to help him obtain love!

Taken from Anime News Network:

Changing schools is something Yuuchi is accustomed to, due to his parent's profession, and with their recent venture to Africa, he is returning to his aunt's home after 7 years. The time that has passed since his last visit has faded his memories of the people he knew, and the ties that bonded them to him, including his cousin Nayuki. Slowly those people, coincidently all being girls, find their way back to him. However, time has passed and things have happened in their own lives that sets the tone for the series. Secrets that are coming to surface, and memories that are returning to not only Yuuichi, but to those surrounding him. A very heartwarming tale that touches upon a spectrum of emotions, mystery, and the supernatural.

A present day, girl's secret story, effective in life.

1) Sickness of the First Love
After a car accident Ayase begins to see hallucinations of his first love, Haigo who disappeared, as the young man he was. An operation is supposed to fix the problem, but doesn't. Seeing a young Haigo during the day, and a grown-up Haigo at night, has Ayase finally gone crazy?

2) The Mystery That Began on the Train
There are two kinds of customers that Soo, as an attendant on a sleeper railway has to deal with: honeymooning couples and weirdos. Teshirogi is definitely one of the latter. The overly dramatic older man seems to be making fun of Soo, but why does he think they've met before?

3) Kitsune Tsuki (Fox Moon)
Tada is the heir of his family and the last fox spirit handler. As a child he saved the spirit Shiro from being abandoned, and Shiro agreed to stay till Tada was an adult. With only two years left to go, Shiro needs to reconcile his feelings for the human boy.

4) Kikusa Yayoi Zukitan
2nd year piano student Wachi is playing one day when he's suddenly accompanied by a violin. Enter genius violinist Meguriya. When Wachi confesses to Meguriya he doesn't receive a reply, but when two people are so aligned musically, are words really necessary?

5) A Happy Person
When Komiya disappears from school, Oosakaya is sure that Komiya will contact him. They're dating, after all. But four years go by before a dirty and tired Komiya crawls into his bed and promptly falls asleep. He's happy to have Komiya back, but Oosakaya can only wonder how long it will be before the person who says he loves him disappears again...

6) Speechless
A word game between two colleagues offers one a chance to make his feelings known.

Itou Seita was supposed to be an ordinary college student, but suddenly he found himself in an anime-like situation when 5 girls -- alien, little sister, childhood friend, tsundere, and fiance -- showed up in his apartment and decided to start living with him. Is this your typical harem or is there something else going on behind the scenes?
A formerly popular but now disgraced and unemployed seiyuu/idol Hira**** Aya gets a generous proposal to voice the lead part, magical girl Killemall, in a mysterious animation company production. But is that company harboring certain secrets?
Finally, how do these two stories connect together to lead to a perfect harem ending?

Also, contains 5 extra short stories.

From Evil Flowers and Shoujo Crusade:

Tamura Aki is a maniac when it comes to historical things and she especially loves Date Masamune. Therefore, when she meets for the first time Hashiba Masaki, who happens to have a bandage on his right eye, just like Masamune, she believes that he´s her destined love. Hashiba-sama, as Aki calls him, is a rather violent guy that fights with his fists some yakuza-like fellows. How will she be able to get close to him in this kind of a situation?

From LuffyNoTomo:

Ryouga finally thought he was gonna get a place where he will be free of dirty messes. But as soon as he walked through the door, he found another guy named Keigo already living there and within one day the place was filthy. There was a slight mistake when it came to the rooms and until a new spot opens up, Ryouga will have to live with this messy guy. However, Ryouga has some rules in which they will follow - he will clean and Keigo will do the cooking because he's good at it. Daily life ensues between these two good looking guys.

This also includes two oneshots:
* Goin' Goin' Crazy
* Sayaka-Kun No Shizuku

Note: The two above oneshots have not been scanlated. Therefore, this volume as a whole is NOT completely scanlated

Shousuke always takes the role to comfort his best friend, Tomoki, who tends to fall in love and then gets dumped several times. One day, Shousuke was drinking with Tomoki and was listening to his whining as usual. Tomoki cracked some jokes and confessed to Shousuke telling him “I love you~” since Shousuke has always listened to him, but Shousuke let his true feelings out and asked Tomoki “Which one do you love more, me or your ex?” Tomoki answered he can’t choose and started crying. Shousuke got shaken up and kissed Tomoki without thinking…!? The day when an airhead, cry-baby man who easily falls in love, and a normal guy who has negative connotations about love became more than friends!

This is a manga based on the fourth chapter of Karate's novel, The Story of a Macaron-Loving Girl Who Lived a Thousand Years Somehow.
It all started when a little girl claiming to be from the Cicada Kingdom appeared on his doorstep.
This story is a little bit warm and a little bit painful.

On a rainy day when Noa forgot to bring her umbrella, the ill-tempered & rude Takagi-senpai helped her out. Since then, Noa has been following Takagi Ren like his pet dog...

From Shinnen:
Recently, An's boyfriend, Kurosawa, has been acting strangely. Did he just cancel their date for Sunday? It turns out that he's helping his best friend, Kouta, who is in love with this other girl. But does he have to do this in spite of An's feelings!?

Includes other short stories: Onaji Sora no Shita, Niji no Ame, Scratch Go-go

Hinata Saotome is suddenly asked out by En Shinohara, a gorgeous boy in her grade. What she doesn’t know, though, is that his hobby is cross-dressing! En has always hated men, and whenever he sees his own reflection, he punches out whatever is doing the reflecting (windows, mirrors…). To combat this hatred, he dresses up as a girl. Hinata decides to go out with him anyway, despite his weird hobby.

Also included are the following unrelated short stories:

• Sweets Honey (V.08)
Serizawa gets sick whenever she smells something sweet, but she likes a boy named Miura who has an extremely sweet tooth.

• Boy's Lily (V.16)
A spin-off of Usotsuki Lily where En is a normal guy who recently started dating Hinata whose hobby is dressing like a guy.

• Amber (V.17)
Mio Hasekura is a helpful high school girl who is very fond of her late father who died when she was younger, and hopes to find a guy like him someday. On her way to school one day, she comes across a man collapsed on the side of the road and Mio helps him out.

A oneshot that appeared in Monthly Spirits 2014-11 to celebrate Ito and Kazuo being in an interview together.

A collection of odd (and often very short) one-shots on a wide variety of subjects. Most of them are at least somewhat humorous, however.

Note: Was nominated for the 7th annual Manga Taishou Award.

Ex-yakuza hitman Yousuke dies... And is promptly scouted as an angel! Will he manage to accomplish his earthly duties, or will he simply drive his trainer, Zerachiel, crazy?

Note: The original oneshot was titled Scrap Heaven, but after being granted serialisation the series name has been changed to Gokurakuchou Dead End.