The demon queen subdued enormous and powerful monsters and slaughtered over half of the world's population. Surviving members of the human race elected a hero to slay the demon queen, beseeching release from her oppressive rule. However, he questions his mission to eradicate the monsters: in his opinion, they too are conscious and alive, and so he anguishes over that fact. Sheila the Demon Queen became interested in him and joined his journey, hiding her identity and with the plan to kill him after she has gained his trust. Eventually, she realizes that she fell in love with the hero, and hence their journey begins...

Sakura is a child who appears simple, but has a crush on her friend's big brother. A tragedy suddenly occurs, drastically changing her life, but to a good turn! A magical item appears to give our heroine the chance of her lifetime by turning her into an adult. But alas, how long can her fantasy last and how will it proceed on from there...?

From Girls' Generation Scanlations:

The cheerful and affectionate Hidekazu, and the thoughtful and cool Eiji. They were my old neighbors, the super popular twins. I, Ueto Shun, am in love with the younger twin, Eiji. We study at the same university and share an apartment, although I do not pay the rent... I live under the same roof, but... I am in trouble! I'm happy, but I find it problematic... The excitement of living with the person I love. I have to add that his older brother, Hidekazu, falls for a tsundere at first sight.

Through his hobby, which is exploring (peeping?) through the spaces in-between, Heisaku-kun ends up falling in love with his neighbor, Fumio-chan. However, it turns out that Fumio-chan has also been spying on Heisaku-kun all this time. Will this uncontrollable pair's hidden love ever be realized?

"This love is secret.
Secret to anybody.
However, my heart is trembling.
---Hey, I've become aware of these feelings.
Please don't notice.---"

Note: One of 3 oneshots included in "Koi Book" wich was sold with ChuChu 2006/11.

From Zombie Scans:
Hating girl is a manga about a girl with an arrow stuck through her head named Asumi, and the boy interested in her, named Ryouji. It's full of goofy humor and silly storylines, yet the relationship aspect of it touches on real life at times, and ends up quite endearing. Check out this silly-sweet manga and laugh at the insanity that is life with a girl that has an arrow through her head.

A C78 doujin done by Aoki Ume, typical light-hearted stuff you'd expect from her.

Sakura is a hard working shoujo mangaka who has no time for relationships. She is forced to attend a goukon, where she meets a rude and patronizing doctor. Despite their differences they begin dating. Can she find love with this petulant man?

Itsuki Minamori has fallen asleep in class and dreams about a girl from his past. He is awakened by Haruna a girl who apparently has a crush on him, but her friend Chihaya Yuuki tells her to stay away from this boy. He explains that he's spent his life being followed by evil ghosts and during the exposition, another one shows up.

Imagine a country where couples are chosen based on the compatibility of their genes. Whenever a resident reaches the age of 14, a partner will be suggested to him or her based on which match would result in the best child being born.

This is a collection of stories about some of the more "interesting" pairings chosen by this system.

1) Noda, a boy who has 3 secrets: First, he's in love with his classmate Fukushima. Second, he can draw his spirit out from his body. And finally, sometimes he secretly watches Fukushima at home, when his spirit has left his body. But one day he drops in at Fukushima's at a very unfavorable moment.

2) A boy who is asked to take care of a huge white rabbit and how the animal makes him understand his own feelings.

3) Yuzuru Sakaguchi, a boy who leads a lonely but peaceful life, cut off by the rumor that people can see ghosts around him. One day a new teacher comes to his school and his life is thrown completely out of joint.

In order to become a beautician, Hikari Takaya moves to Tokyo with her high-school sweetheart. But life at beauty school is completely different from what she expected. A love story about the dreams and romance of youth. Volume 2 includes two one-shots: "Powder Snow" and "Sleeping Beauty and the Castle of Garbage."

Hanagasumi Highschool is located right in middle of Kabukichou, Tokyo's #1 red-light district. Because of this, the students are constantly robbed and harassed by yakuza, gangs, etc. In order to ensure the students' safety, the Student Council came up with one solution: befriend the legendary "Tiji-kun", the strongest man in Kabukichō. Two students, Motobu Tomoko and Akazawa Ryo, were assigned the task. But when they find out the true identity of the mysterious "Tiji-kun", having a peaceful school-life turns out to be harder than it seems.

1-4. Tight Rope
The teenage son of a sick mafia boss is constantly pressured to inherit his position as the "5th". However, Ryuu wishes for nothing other than to marry his friend Naoki and have a happy family. How will this go?

5. Doushiyoumo Nai Keredo Returns
Shimano's Father shows up at Kurokawa's apartment on weekend and meets his son wearing apron?!

6. Tight Rope Extra

This is a collection of loosely interconnected stories where the main characters are all animals, especially the tiger who is the hero of the first book.

Rin, Nerine, Itsuki, and Mayumi find a strange watch that transports them back in time, where they met Forbesii before he is married and has Nerine. While he is engaged to Ai, his maid, Sage, is also in love with him, causing a love triangle.

A short story about a young maiden who falls in love for the first time.

In a peaceful kingdom with much loved King. There is only one problem. Hopefully the King will make the right choice.

"In a certain wooden high school building, in a rural town... a strange student, and as it seems, a strange couple is enrolled."

Note: Original language image is unavailable.

From Wingtip Cafe:

In Heian era, a noble chief councillor of states had 2 children who wished they were opposite gender. Lady Kira is strong, willful girl, while Lord Kira is weak, beautiful boy. Because of their characters, their father raised Lady Kira as a boy and Lord Kira as a girl.
The manga is based on a novel from late Heian era called “Torikaebaya Monogatari”.