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!

What will happen when a few teens enter into an unexpected drunken state?

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1) Mikado Shirahane x Towa Aikawa's story
2) Ryuuichi Shinonome x Shuuji Yukimura's story
3) Kuon Aikawa x Nanao Shirahane's story
4) Shirou Akagi x Nao Kousaka' story

Reading Order:
Volume number - Title [Pair number - Appearance number]
V.01 - Warui Koto Shitai (I Want To Be Naughty!) [1.1]
V.02 - Warui ko Demo Ii? (I'm a Bad Kid, But That's Okay, Isn't It?) [1.2]
V.03 - Kirai ja nai Kedo (I Don?t Dislike You) [2.1]
V.04 - Koi ja Nai Kedo (It's Not Love) [2.2]
---- Warui Koto Bakkashite Gomennasai [1.3 & 2.3]
V.05 - Warui Yatsu Demo Ii (Is Even a Bad Boy Good?) [1.4]
V.06 - Mujihi na Otoko (Merciless Man) [3.1]
V.07 - Warui Koibito ja Dame? (Can a Bad Boy Be a Lover?) [1.5]
V.08 - Kare ja Nai Kedo (I'm Not Your Boyfriend) [2.4]
---- Warui ko Tachi no Bansan [1.6 & 2.5]
V.09 - Mujihi na Anata (Merciless Lover) [3.2]
V.10 - Sunao ja Nai Kedo (I'm Not Honest) [2.6]
V.11 - Mujihi na Karada (Ruthless Body) [3.3]
V.12 - Warui Ouji Demo Suki (I Love a Prince Even If He Is Naughty) [1.7]
---- Kira-senpai to Kokonoe-kun ~Gekokujou~ [4.0]
V.13 - Shouwaru Ookami ga Koi o Shita Rashii (Wicked Wolf Seems to Be in Love) [4.1]

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.

My Little Monster targets the relationship between Shizuku Mizutani, who has a lad named Haru Yoshida, who sits next to Shizuku in course but seldom attends school and her strategies for the long run, as well as certainly no interests except in analyzing. After Shizuku is tasked with providing course printouts to Haru's house, she meets with Haru, who promptly greets her as a buddy, beginning their new connection. Nicknamed "dry ice," Shizuku is celebrated as a woman who's emotionless and cool. But when Haru was met by her his innocence and his insufficient knowledge towards human associations touched her. Haru is really tender and kind, though recognized as a violent and uncontrollable creature. It requires considerably more for Shizuku to understand and take her own emotions towards Haru, although Haru promptly declares his love towards Shizuku. Collectively, as 2 beings that are formerly unsocial, they help each other understand the best way to take care of others and make friends.

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.

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?

Konoe Subaru, a classmate of Sakamachi Kinjirou, has been serving as the butler of Suzutsuki Kanade in school. Due to an accident, Sakamachi discovers Konoe's secret...that he is actually a she!? Apparently she will be removed from her position if anyone at school finds out. What will unfold from this chain of events?

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

She's a second-year high school student with a single all-consuming question: Will the boy she likes ever really notice her? He's the school's most notorious juvenile delinquent and he's suddenly come to a shocking realization: He's got a huge crush, and now he must tell her how he feels.

NOTE: Chapter 232 does not exist, there's no chapters missing.

From Intercross:

Lala has always believed ever since she was little that her prince would come from outer space, so she would always ask of God and the Moon that she could meet her extraterrestrial prince soon.
One night she meets a bishounen by the name of Ban and instantly falls for him but is he really an alien or just another human?


Also includes:

15-minute one-way trip
Ao no Kanata e

From Cave Scanlations:
Nagomi Mameshiba (18), for the first time in his life, he invites a girl to his house with "oden" as bait. Just what is he planning? Can he convey his feeling with an oden dinner?

From Easy Going Scans:

Choi Ha Ram, an average high schooler decides to buy a necklace one day without knowing that this item is going to turn her life upside down! That necklace has a connection with the ghost of Yu Ga On and whoever wears it is able to see him.
Yu Ga On has no intentions to harm the girl on the contrary actually but his actions always seem to get Choi Ha Ram in trouble. As if this was not enough a new neighbour comes along to add more excitement in her life!

From Sweet Melody Scans:
Nayu and Oumi are childhood friends. Without realizing it, Nayu finds she has fallen for Oumi over the years. However, just as she comes to terms with her feelings, Oumi reveals himself to be in love with the pretty Tsuzuki-san in his class. How will Nayu deal with such heartbreak?

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.

From Tasty Kiwi Scans:

HyoYi is a poor girl with a scholarship to one of the most exclusive private schools, attended only by kids from the richest families. Strong and resilient, HyoYi fights to protect her mentally handicapped brother whose disability makes him a target for bullies and beatings. Then she meets MinHa, who unexpectedly winds up making an agreement to protect the siblings. Bound together by their unusual arrangement, HyoYi and MinHa gradually learn what it means to love, one step at a time....

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