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!

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.

Hang-Ah is a girl who can forsee the future through dreams. Along with Nabi, Hang-Ah goes on a journey in order to break the seal of the four gods.

At the dawn of the 17th century, at the end of the era of civil wars, in a world of chaos, the epic Battle of Sekigahara was joined.
One man emerged from the largest battle ever fought on Japanese soil; a terrible warrior of unspeakable power, he was nicknamed 'the unconquerable.'
Kyoshiro is a peaceful medicine peddler who harbors the soul of an assassin. He accompanies a young bounty hunter across Japan in search of a murderer and on a quest to discover the terrible secret of his own identity.

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.

Misako's father remarried a week ago and her step brother turns out to be the school's most popular guy, Aizawa Hiroki. Giving the appearance of a gentleman it turns out he's a huge playboy, trying to "capture" her to prove they can't be a family!?

Includes two oneshots "Kimi Fechi" and "Kanzen Date Manual". The former has yet to be scanlated.

After a long illness, Naki returns to school and finds a ghost in her locker who asks her to become a Rock-n-Roller.