Sengoku was a period when Japan was in war, a period when humans were still able to communicate with Gods. Young Sarutahiko has died because of the struggle, but he will be resurrected and turn into an immortal thanks to a God's power in exchange of consuming his sister's life day by day. To save her, Sarutahiko will ask for help to the God of the Mountain, but instead, he meets a beautiful young girl... What is the true identity of this girl?! What kind of God is capable of granting wishes in exchange of souls, blood and death...?!

Yagami-kun's Family Affairs follows Yūji Yagami, a high school student with a problem: his mother, Nomi, looks very young and Yūji has a crush on her. To complicate matters, his high school homeroom teacher is also infatuated with her due to how young she looks. Nomi is oblivious to all of this and is head over heels in love with her husband, Yōji, and frequently displays this affection very publicly, which causes more embarrassment for Yūji.

Yūji's high school friends constantly tease him about his "mother complex". When Valentine's Day comes around, though, Yūji receives a box of handmade chocolates. The name on card can be read multiple ways, the most common way being Masayuki Ikari (五十里 真幸 ,Ikari Masayuki?), a male name, so his friends tease him throughout the day until it's time to meet the person who sent the chocolates at the front gate after school.

The girl who sent the chocolates (the name is actually read "Mayuki") starts meeting him after school so they can walk home together, and they eventually become an item. The remainder of the story follows Yūji and Mayuki as their love grows and as Yūji works to resolve his "mother complex" issues.

(From Wikipedia)

There was once an ogre (oni) mother who gave birth to a human-looking child. Instead of an ogre's horn, this child was born with a sword in hand called the "Onigirimaru" or Ogre Slayer. He has no name and is only refered to by the name of his sword. Though he appears human, he is pure ogre.

Believing that he will become human once all of his kind vanished from the world of humans, he sets out on his destiny to slay all of his kind. Even now, in the mother world of Japan, he is still out there slaying ogres.

Daria is a relatively normal girl, despite the fact that she always seems to be the recipient of miracles. But when a strange character appears suddenly, with the intention of keeping his promise to kill her, her average high school life becomes anything but...

Soon after transferring to a new school, Mayu Kodabutsu recieves a love letter from a cute girl named Yuuko Hai... Expecting the envy of his classmates, Mayu is surprised to recieve condolences instead. You see, Yuuko Hai is no ordinary 5th grader... She's an exorcist. And Mayu is destined to experience her 100 terrifying ways.

Suwa Daisuke is an ordinary, but popular, high school student. One of his classmates, Aikawa Hinako, is somewhat fearful of men and because she ran away from just his attempt to touch her hair, he states to one of his buddies, that she is the only one he wouldn't date, unaware all of the people in his classroom could hear them, including Hinako.
Daisuke's attitude changes after he unintentionally hears a shocking truth that she confesses in an abandoned church. His former annoyance turns to compassion and concern. Hinako is unaware that he knows her 'little' secret. Believing him to have no romantic interest, she becomes more relaxed and comfortable in his company. Their relationship faces a lot of obstacles, including jealous classmates.

What does a high school boy have to do in order to make the love of his life remember you in *this* lifetime? Cosplay? Host a "this is your previous life" audition? Show her all your good points? Just because she is a manga otaku in love with Blue-Sama. It's not like falling in love with manga characters is based on real life?

Contains two stories:

I. Migiko Nipponichi!! -
As children Sakon confessed his love for Migiko and promised to protect her, but not long after suddenly cut all ties with her. Now, many years later, Migiko is determined to make Sakon take notice of her by becoming Japan's Number 1 idol. - From Solaris-SVU.

II. Takuya of the 7 Wonders.-
There's a rumor in the school that if a person steps into the school at night, they will disappear. Sanami, a middle school student who is oblivious about the rumours, decides to prove those rumors out. She gets her best friend missing and now must save her before she disappears.

From Tokyopop:

Masayoshi Kurozuka is an ordinary high school boy... until the day he discovers that he is the reincarnation of an evil woman named Oni-hime, who sold her soul to the devil during Japan's warring period.

Masayoshi must come to grips with his identity, all the while fighting off legions of ghosts -- the remnants of men killed by Oni-hime. In order to free himself from this curse, Masayoshi must discover the truth behind Oni-hime's deal with the devil and clear her name in the eyes of the restless spirits seeking revenge.

From Solaris-SVU:
Shingo Chiryuu isn't much different than any other guy except for one thing... He's afraid of girls. Now he finds himself surrounded by girls, including the one whose attack originally instilled the fear in him, as he attempts to cure himself of his gynophobia.

Shingo Chiryuu isn't much different than any other guy except for one thing... He's afraid of girls. He was attacked by an overweight girl because she was turn down from confessing to him, which caused him to develop a fear of women, seeing them all as "dinosaurs". Even despite all his efforts to get away from the girls, they seem to always found their way to him, making trouble along the way. Now he finds himself surrounded by girls, including the one whose attack instilled fear in him, as he attempts to cure himself of his gynophobia.

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

From RebelliousArt:
Asahi, desperate after the loss of her best friend and boyfriend, came to the abandoned elementary school above the hill. It has been said that it's a cursed place that it will be the last place you will tread in. Those who live will not be able to return. And there, Asahi meets...!?

A series of oneshots.

From Solaris-SVU:

"When the sinister Dark Guy and his evil army, Black Pierrot decide to take over the world, they decide to start from the Japanese countryside. Luckily, however, the great hero Blue Hunter is there to thwart him. But when Blue Hunter saves the young maiden Tachibana Honoka, he finds himself assaulted on another front... By her affection. Now he must juggle defending the earth, dating Honoka, and simultaneously trying to get her to take notice of his homely true identity, Fuwa Shinpei."

A demon boy who lacks horns on his head wields the cursed blade "Onikirimaru", the one weapon that can slay a demon, in a never-ending battle with the demons that haunt Japan during the age of the samurai.
Behind the stories of Oda Nobunaga, Toyotomi Hidetsugu, Ishida Mitsunari, and the other famous generals of the Japanese civil wars lurk secrets and demons ...
An astonishingly deep story about these demons and the sword Onikirimaru!
And this also includes the secrets of Onikirimaru's birth, which readers have always wanted to know.
The legend of Onikirimaru explains clearly how Onikiri was born, and the hidden secrets of his past.
Behold the battle between the darkness of the age of the samurai and Onikirimaru!