From MangaHelpers:
There is a magic love app that supposedly helps people's dreams of love come true. The first story of this love app follows Tetta and Ginko, friends who have bickered since grade school. Tetta looks up the magic app on a whim, and ends up with an application that is connected to Ginko. When he manipulates the "Ginko" on the app, it affects the real girl. He's embarrassed to have it in the first place, but he can't uninstall it without inputting Ginko's measurements. Whether he actually likes Ginko romantically or not, it seems that this app could only make the situation worse.

Volume 1
1. Aoneko Happy (あおネコハッピー); Doujinshi, Pray for Japan (2011)
2. Yousei-tachi no Batsu-game (妖精たちの罰ゲーム); Magazine Special 2013-08
3. Okaeri, Frosch (おかえり、フロッシュ); Bessatsu Shounen Magazine 2014-04
4. 413 Days (413DAYS); Magazine Special 2014-04
5. Sono Onna, Erza (その女、エルザ); Young Magazine 2014 #18
6. Natsu vs. Mavis (ナツ vs. メイビス); Magazine Special 2015-02
7. Fairy Tail of the Dead Meeeeeeeeen (FAIRY TAIL OF THE DEAD MEEEEEEEEEN); Shounen Magazine 2015 #17
8. Yousei-tachi no Christmas (妖精たちのクリスマス); Magazine Special 2015-12
9. Tokubetsu Irai. Kininaru Kare ni Chuui se yo! (特別依頼。気になる彼に注意せよ！); Shounen Magazine 2007 #5

Volume 2
1. Yousei Gakuen: Yankee-kun to Yankee-chan (妖精学園 ヤンキー君とヤンキーちゃん); Shounen Magazine #2008/1/11 Zoukan Dragon
2. Youkoso Fairy Hills!! (ようこそ フェアリーヒルズ!!); Magazine Special 2009-12
3. Niji no Sakura (虹の桜); Bessatsu Shounen Magazine 2010-04
4. Fairy Tail x Rave (FAIRYTAIL×RAVE); Magazine Special 2011-05
5. Fairy Woman (フェアリーウーマン); Magazine Special 2012-09
6. Natsu to Asuka (ナツとアスカ); Gekkan Shounen Magazine 2014-05
7. Lucy to Migi (ルーシィとミギー); Gekkan Afternoon 2015-10
8. Fairy Tail: Stone Age (FAIRYTAIL STONE AGE); Magazine Special 2016-07
9. Coca-Cola Collaboration Bangai-hen (Coca-Cola コラボ番外編); Coca-Cola 2010 Haishin Happy Teens Club

Compilation of side stories not included in the main entry.

An offshoot of the original Hetalia - Axis Powers work, Hetalia - World Starts follows the strange personifications of Italy and other nations as they navigate their world.

A girl watches over the town she lives in, believing the world is going to end. Soon she is joined by a boy who has no place to go, and they watch over the “last days” of the world together.

Toto is a newcomer god and has taken up post on the peaceful "Isle Island", a mysterious floating island in the sky.

In a land of swords and magic, there was a creature—an evil god—with extraordinary power. People feared its existence, but at the same time were captivated by its power. They wanted that power. Their dangerous wish would eventually lead them to break the evil god’s horn and create “Shin Kaku Gi Kou,” huge magical weapons infused with the horn.

One of these weapons alone has enough strength to overpower an entire country and its army, and there are 10 of these across the vast continent. However, one day a severely injured Moebius, the strongest Shin Kaku Gi Kou user, entrusted his “power” to a young boy named Miyabi who happened to be present.

There is an 11th user out there that no one knows about. You must protect everyone before the out-of-control monster destroys the entire continent, he was told.

A collection of short stories.

The short works collection all the Takako Shimura fans have been waiting for! The woman who appears suddenly in front of the timid boy Megumu is Nozomi, a self-proclaimed “witch’. She uses her mysterious powers to both play tricks on and help him. The “The Devil is so Cute” series, illustrating the fantastic mingling of a mysterious witch and a young honors student, is completed with a new bonus chapter! In addition to the title story, there is also “My Summer Vacation” which traces the wavering of a young girl’s heart after she falls in love at first sight at a bath house, “Unworthy Son” which captures the suffering of a young man (who dreams of becoming a comic artist) whose former teacher and object of affection becomes his stepmother, and many others, adding up to seven stories that absolutely shine with Takako Shimura’s charm.

1-5. Kawaii Akuma

6. Atashi no Natsuyasumi

7. Suteki na Ano Ko

8. Chuugakusei

9. Toaru Hi

10. Henshin

11. Fushou no Musuko / Unworthy Son

One day, the cat gods of a shrine that is falling out of use find a human baby left outside, all alone. They decide to take in the baby, who they name Tama, and raise her as their own. Now the little girl Tama, who knows very little about humans, is trying to grant the wishes of anyone who visits their little shrine, using the power of the cat gods!

From: Easy Going Scans

Yoshino Takigawa is visiting his friend's family grave. After getting there, he encounters Evangeline Yamato, a woman in search for his friend, Mahiro Fuwa, who left a month ago to find his family's killer without any clues to who it might be. Evangeline informs Yoshino that two places where Mahiro has been spotted have been quarantined, due to an epidemic.

When Evangeline is questioning Yoshino at gun-point, Mahiro comes out of nowhere and swiftly saves him and can stop bullets in mid-air, claiming to have a deal with a sorceress; not just any, but the strongest sorceress, Hakaze Kusaribe, who promised to help find his family's killer with her magic so he can kill the killer himself.

After saving Yoshino, Mahiro informs him about the epidemic, a curse that turns living things into metal, claiming the Kusaribe clan plans to revive the Tree of Zetsuen that could destroy the world.

Two friends with a rare penchant for trespassing on any forbidden site get cursed by the worst god of them all, calamity itself. Trying to undo their maledictions, they are thrown into an adventure of biblical proportions.

A story that follows the titular character's work as a private secretary. With Tanaka's support, a company can become invincible and achieve any future it desires.

A collection of short manga from Shiki Seiichi's Twitter.

One-shot story published as a special prologue chapter to the 4th Bleach movie, Jigoku-hen.

From Viz:

10th grader Yugi spent most of his time alone playing games--until he solved the Millennium Puzzle, a mysterious Egyptian artifact! Possessed by the puzzle, Yugi becomes Yu-Gi-Oh, the King of Games, and challenges evil-doers to the Shadow Games--weird games with high stakes and high risks! These graphic novels contain new stories not seen in the anime, including the origin of Yugi and his friends!

Notes: This is a section of the original Yu-Gi-Oh! series and contains the Duelist Kingdom and Battle City arcs. Originally just called Yu-Gi-Oh!, Viz renamed it to its current name.

This series continues in Yu-Gi-Oh! Millennium World

From Yen Press:

A young boy named Roxas whiles away the last days of his summer vacation with his three best friends in their quiet little home of Twilight Town. But all is not as it should be in this hamlet nestled between night and day. Strange things keep happening around Roxas, which always seem to involve mysterious creatures and he is plagued by dreams of a boy named Sora, whom he has never met. Bewildered, Roxas searches for answers. Will they lead him to Sora, Donald and Goofy?

High above Farmless City, citizens are stunned by the sudden appearance of two floating figures. Are they human boys, monolithic robots, or something much more strange? As the battle ensues between them, destruction and devastation falls on the hapless city. One figure is Vice, and seems to be as evil as his name implies. The other is Ultimo, intent on trying to stop Vice from wreaking more havoc. But who are Vice and Ultimo really? Where did they come from? A new mystery begins with the fate of the world possibly hanging in the balance!

International chain? Instant packaged cup-noodles? No chance! "Taishou" the cat is going to run a first-class noodle shop in this 4koma or die trying. But first, Taishou has to make ramen soup people can actually eat...! Will the taste improve? Can Taishou find hired help who will actually serve water, not just drink it? Could it be the Matrix Move will do the trick? And who is this new "cook" Taishou has hired...?

We all wish we could go back in time, to turn back the clock and fix the past. But in this reality, that simple wish brings about something deadly—demons that devour a person's time! It’s up to a group of strong warriors who fight using time manipulation to destroy these blights. Brought together under unique circumstances, Victor, Kiri, Mina, and Blaze have what it takes to maintain the balance of time as the chosen fighters—the Chronos Rulers.

Note: This is a Taiwanese manhua that Shueisha is publishing for free on its Shounen Jump+ website and app.

From birth, Wang Fu is a human raised by the beast race, even though the others in the beast village never truly accepted him, Wang Fu still cares about the safety of his home. When the Black Star Race returns, something has awoken, forcing Wang Fu to step onto the journey to find his true self.

Continues where Tantei Gakuen Q ended two years later. They are still in Dan Detective School solving cases.