From Aerandria Scans:

Kokoro was involved in a traffic accident when she was small, and there was a hero who risked his life to save her. She can’t remember anything about him, except for his back, which was scarred from saving her. Now a high school student, she still can’t forget the guy from her memories. Suddenly, she was assigned to take care of the new transfer student, Inuyama Kei, who’s always quiet and somewhat of a weirdo. He reminds her of her childhood hero, but she wishes her hero was Shun-senpai, the idol of all the girls in school, and who’s been very nice to her lately...

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

Satoshi and Satomi are childhood friends who have been trying to outdo each other in everything since they were small. Christmas is coming, and they’ve started a new challenge to see who can get a date for Christmas first! It seems that Satoshi might win the bet, with Natsuki-chan, the Sexy Dynamite of the class making the move and asking him to be her date, but will things be that simple for our plain-looking Satoshi? Satoshi and Satomi are childhood friends and for a long time, they have been trying to see who is better than the other. Christmas approaches and they've decided to start a new challenge. The challenge is to see who can get a date for Christmas first. Satoshi's target is Natuski-chan A.K.A Sexy Dynamite. Will Satoshi get a date first, or will Satomi beat him to it?

Beautiful naive Minato Akina has come to Tokyo to seek his fortune. Losing all his money on the first day does not bode well for our young hero. A chance meeting with down on his luck Chiba Rintarou gives Akina a shot at becoming a young idol! But Akina and Chiba are both carrying scars from the past.

From Bluebird Scans:
A girl from Osaka, Chisato, makes a trip to Tokyo to where her brother lives to look around the city--for Tokyo men just like in the dramas. But at her brother's home is...?

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.

1. Tenshinchigi (Gods of Heaven and Earth)
The gods of earth, water, fire, wind and thunder gather together every day for their assignments. In between causing storms and rain showers love develops.

2. Fragile but Strong
Mayden, the king from Dumayden and Alexander, the king from Alectoria, are best friends. One day Mayden proposes a marriage between his eldest son and Alexander's only daughter but, unknown to most, the king's daughter is actually a rebellious teenaged boy! What happens when Prince Mayville turns up for the marriage interview and meets beautiful but headstrong Alec instead of the rumoured Black Rose Princess Sandra?

3. Stray Cat Rock
Simple first aid to a wounded stranger is interpreted as something more.

4. A Wanderer's Love
A host who enjoys preying on women finds himself unexpectedly falling for a male florist's beautiful bouquets

5. Love Monster
Returning home drunk from a group date Hayato finds a strange vagabond on his doorstep who turns out to be his Uncle Tooru.

Collection of short stories:

1) I'm His Wife.
I'm a high school student. And I'm the wife of Hii-kun, a novelist. However, when he's working, somehow, he seems far away, and I always get very lonely...

2) Love Mates
Until now I've been lonely and that is the reason why I wanted a roommate. But what should I do? I didn't know my roommate will be a guy.

3) Children Salad
I'm a spunky nursery school teacher. Even though I'm aspiring to become a nursery school teacher, I can't handle kids! They are like aliens that I can't comprehend!

4) The Flower Language of Lilac
Until middle school I was brought up like a boy. That is why I don't like skirts and even my girly name, Serina. What I love more than anything is making people laugh, but recently he is getting in my way.

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.

From Storm in Heaven:

Beat has always dreamed of being the Golden Hero of Totia. He made a pact with his best friend Ricercare (Rice for short) to join forces to annihilate the demon king in order to achieve this aim. Yet a twist of fate causes him to abandon his goals and fight alongside Rice to protect the demons. Just how will they fare against the entire nation of Totia? And can Beat protect Rice from the hero of Totia before it's too late? Cute and heart-warming, this amusing five-volume series also includes interesting side stories rich with magic and beautiful art.

From Wingtip Cafe:
Rina is always busy studying and working to support herself. After the depressing news that she again lost first place in the school rankings to Julius, an expressionless guy who is her arch rival, Rina finds Milch, a little fairy girl. Later, she meets Sylvie, a Fairyland knight who has come to rescue Milch.

From Kokoro no Oasis:

Tomas is a proud and fearless assassin who has never failed a commission. So what happens when he's commissioned to kill Myra, an immortal vampire?

Mangaupdates:When a vampire is in love with a human...and you add zombies into the mix...

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).

From Storm in Heaven:

What happens when your mother and her best friend decide that their two children will be soul mates?

It seems fate was playing a trick, though, because when the two children meet each other, neither is a girl. Since both of the two children turned out to be boys, nothing will happen, right? Though the mothers might have dropped the idea of marriage, destiny might have other plans: the lives of the two boys may be bound by a red thread.

Has characters from Dear Myself and an early (but different) incarnation of Tsuda from Color.

From Girls' Generation Scanlations:

Kikuchi-sensei rejected a love confession. The boy cursed him, the next day on the train going to his new job, every man in the car wanted him... But why were they harassing him?! If it wasn't for the young Akane, who knows what might have happened?

From Viz:
Rejected way too many times by good-looking (and unattainable) guys, shy Riiko Izawa goes online and signs up for a free trial of a mysterious Nightly Lover "figure." The very next day a cute naked guy is delivered to her door, and he wants to be her boyfriend!
Has Riiko died and gone to heaven? The cute guy turns out to be sweet, smart, a great cook, and lots more. And he looks like a million bucks, which is what he's going to cost Riiko if she doesn't return him in time...

*Includes two other side stories in the last volume called:

• Ohoshisama ni wa Sasemasen! (I Won't Let You Become A Star!) -
A special short story that was published in a freebie book put out in Sho-Comi. Sneaking into a boys' school to exterminate ghosts! However, what is the boy Chima has always admired doing there...!?
- ShoujoMagic

• Shounen Aromatic (Aromatic Boy) -
Kabuki Takitsugu is a boy who has the family trait of smell. He can smell anyone's fragrance and find their perfect match. One day, a mysterious girl named Hatsune appears before him, asking him to find a match for her. But, for some strange reason.. Hatsune doesn't have a scent.