Manga takes place in Gensokyou, the setting for most of the Touhou games. Obviously Touhou games related.It's story of 3 fairies and their daily tricking to visitor of Hakurei Shrine, getting revenged, and so on.

About the student council president and his otaku friend(?) daily life in school.

From Aku Tenshi:

The world of Waq Waq is a place where machines attack the black-blooded humans, whose only defense are the Sakimori, humans chosen to partner up with the Goujin-zou, a race of machines that grow stronger when melded to humans. Shio and his Sakimori father, Al, upon entering a village, are attacked by the machines. As Al falls in battle, he leaves his son to become the new Sakimori and guardian of a mysterious young girl, believed to be god, found at the heart of the battle. Waq Waq is the story of Shio as he battles to protect what was entrusted to him by his father. Let the battle for God begin!

From AQUA Scans:
The “rabid dog” Fujishima, a juvenile delinquent, gets a second chance to live after being killed trying to save a tiny dog of a car.

From Tokyopop:
It is the year 22 H.C. (Holy Century). Shinjuku is populated by monsters and goblins. Humans are endangered and the town is rife with crime. Natsuki Sasahara is a rookie at the Police Company and a newbie bounty hunter. Scouted by her superior, Batanen Fujioka the werewolf, she is half-human, half-catbeast with magical powers, and is slowly getting the hang of the business...

The famous Gundam series marked top rankings in popularity for a long time. What was the secret? How was Gundam born? What’s the story behind Gundam? For the first time ever, we take a step out of the actual Gundam plotline, and we turn the perspective towards the production of Gundam; how it became a major hit surpassing its predecessor, Japanese Battleship Yamato!

This story is fictional, but the names of the characters are real, including the voice actors and director.

Kunimi Hiro and his best friend Hideo were baseball wonders... Until Hiro found out his arm was permanently damaged, rendering him unable to play anymore. A frustrated Hiro goes through the trouble of specifically finding a high school with no baseball team... Only to later on find out the doctor who examined him was a quack and his arm is perfectly fine. Hiro is quick to reinstate his dream: Creating a baseball team for his school and getting to face off against Hideo in the Koshien. The number one premier league for high school baseball.

What would you do if a tiger skin bikini-clad alien followed you to school every day? Poor Ataru's life has never returned to normal since volatile extraterrestrial princess Lum fell for him. Now an excruciatingly wealthy and genteel rival, Mendo, adds to Ataru's torment. Not to mention an unending stream of extraordinary classroom visitors and educational materials including incompetent cherry blossom spirits, a legendary nightmare-eating tapir, and a fourth-dimensional camera that breeches alternate realities.

Note: In 1981, this series received the Shogakukan Manga Award.
Won the 18th Seiun Award for Best Comic (1987).

The story of castle otaku, Ume, meeting a sexy blonde escort girl named Shigure...Is that really it or is there more? Read and find out!

After Tsubaki Ryuta is run over by an alien, he receives superpowers that he can’t control. How is Ryuta going to make use of his new powers? Being the new hero of town could be an option, but…

Ganota Utsuki leads a normal life, working for a big company in Tokyo. She has just one big secret: she's a giant Gundam otaku and she doesn't want anybody to know! And the fact that her number one love interest despises all things Gundam doesn't help any either.

While many of us would probably scream at even the thought of a ghost being near us, Freshman Nimura Kensuke just thinks of it as a common everyday thing, seeing as how he has the uncanny ability to see so many of them on a daily basis. Things soon heat up for him when he meets a girl who changes his life from then on. Her name’s Kagura, and she has the power to summon a mighty “spirit devourer”--otherwise known as a “Ga-rei”--called Byakuei. So, what’s Nimura to do? Chase down the evil spirits and have Kagura summon the Ga-rei to devour them, of course! Now, come feast on their adventures like some ravenous Ga-rei!

Yoshino Shinya is a high school boy who is bullied all the time at school, which leads him to have no friends. However, no one knows that he is actually half-youkai, and due to that, he has the desire to eat human flesh. But because of the promise he made with his youkai father never to prey on humans, Shinya tries to resist his youkai blood that is thirsty for human's blood, and live as a normal high school student. Will he be able to keep the promise he made with his father and keep his secret hidden?

From Chinatown KM: 17 year old Qianchun, gets lost in a place deep in the mountains when his classmates pull a prank. Later, he finds out that there is a ghost story about a hotel in the mountains, about a mother and her son...

Read this manhua from left to right!

A dark and stormy night... A haunted mansion... Shrieking maniacal laughter...

On Pomello Island, a wayward genius named Enji has finally decoded the Encyclopedia of Summoning and with it the knowledge to summon and control the dreaded Yellow Dragon.
The power of the Yellow Dragon is to command all the animals of the world; and with it Enji plans to at last gain fame, respect, and the affections of his beloved Moegi-san.

The conditions are right, the huge egg opens, and out walks... a little girl?

Enji's plans for world domination and winning the love of Moegi-san just fell apart. Or have they...

The story revolves around the title character Yukisada Tamura, who is in his third year of junior-high school when the story begins. Yukisada has become captivated by a strange girl named Komaki Matsuzawa who says that her birthplace was on another planet and she is trying to go back. One day, Yukisada confesses his affections to Komaki, but immediately following this, Komaki's grandmother dies and she has to move away. They both manage to keep in contact for a while by writing letters, though Komaki stops writing around the time of the high school entrance exams. When Yukisada enters high school, he becomes concerned with one of his female classmates named Hiroka Sōma. In junior-high, Hiroka was constantly bullied, which would cause her to stay home, eventually causing her to become isolated and helpless. Yukisada chooses not to ignore her like most of his other classmates, and instead starts encouraging her and helps her to build her self-esteem. Before long, Hiroka falls for Yukisada, and one day confesses her love to him. During this time, Yukisada has kept in contact with Komaki and has mentioned Hiroka in his letters. Thereupon, one day after a long time, a letter arrives from Komaki to Yukisada asking who exactly is Hiroka.

Bored of sitting around holding a wine glass all day, the Demon Lord is looking for something new. Something cute. Someone like Komomo, the level 0 heroine who has just appeared before him, ready to vanquish him like all heroes (or heroines) do. Faced with a demon king who'd rather watch TV under a kotatsu and make out with her than spread evil over the land, what will Komomo do?

* Also include are the following short stories:

• Calling in vol. 2
• Stray Doll in vol. 2

A series of related stories about (a lot of) middle and high school students as they discover their hatsukoi (first love).