1-6. Collecting #1-#6
A girl collects everything her crush touches; a man keeps a photo album of women giving him blowjobs; schoolboys plays a sexual card game; a lunchbox factory girl collects vomit; a man gathers his missing girlfriend's body parts; a suicidal girl joins a group of women who've made abortion into a grotesque art.

7. Harakiri
A world where cutting your stomach is the newest fashionable trend among schoolgirls.

8. Holy Night
Santa is terrorizing the Japanese by flooding everyone with unwanted gifts. The only way to stop him from sending more is to convince him that you're happy with what you've got, or so people think.

9. The Unscratchable Itch
Putting worms under the skin can be an addictive pleasure.

In almost all respects, Arton is the same as Earth. The sky is blue, the Sun is yellow, the Moon is silver. There we find the same air, the same water, the same trees and animals that we know on Earth. Arton is a world of adventurous heroes. They are everywhere, in kingdoms, villages and cities. The greatest of those heroes is a champion who came to be in recent times. He's only known as the Paladin, and no power has ever proven itself able to defeat him. A holy warrior, tempered by the power of twenty gods, he's the utmost defender of truth, honor and justice. The Paladin has gone missing... 

Vol. 01 tells the story of Tsubomi Tachibana, a fifth grader dealing with issues such as her mother's pregnancy, her first period, and the strange feelings she has started to get when she has been around boys.

Vol. 02 tells the story of Tsubomi Kusakabe, a fifth grader, who encounters an alien wanting to do research of earth. It turns out he has picked Tsubomi to be his research subject.

Note: Won the Shogakukan Manga Award for children's manga in 2009.

Originally in German

Yanik is new at his school and doesn't want to be an outsider again. When he meets Alan he also wants to be as popular as him with the girls. But when Alan kissed Yanik to get rid of the girls, the admiration turns into disgust. But at a party where Yanik had to disguise himself as a girl Alan falls in love with the "girl" at first sight...

From Viz: After a escaping the unwanted attentions of some bored soldiers with the help of a handsome stranger, Sophie returns home only to be accosted by the infamous Witch of the Waste! The Witch lays a curse on her, turning Sophie into a creaky old woman. Sophie knows she has to leave town, and soon finds herself taking shelter in the moving castle of the dread wizard Howl...who is rumored to eat women's hearts!

Partake in the horror, the terror, the bloodcurdling madness of the serial killer mind, and the one who dares exterminate them! Except it's a comedy horror. Anyway, contains explict blood and gore, so you have been warned.

-Taken from Iryuu.net

Miharu, an ordinary high school student, is always accompanied by two very popular, good-looking guys. Just because he's weak and helpless... Miharu thinks that somehow, he should become more independent, but his actions set the suppressed emotions of those two guys on fire...!?

From Manga-Heaven:

Eitaro is hooked to the erotic chats... Someone steals Sakuko's lingerie... Ai is determined to lose her virginity... Everybody is hooked on love... or is it to sex?!

An erotic manga by Kyo Hatsuki following the trials and sexual triumphs of the main character. The story travels from - "Will he ever get laid?" to - "Will he ever get a steady girlfriend?" to - "Will he ever learn to keep it in his pants?!"

From Kurosainosa:

Kobayashi, who since childhood dreams of becoming a detective, knocked on the a Aketomo's detective office door. But waiting inside is a collection of handsome men! Apparently, this office also opened a side-job as host club!

A mangaka summons a spirit that helps him meet deadlines at the cost of his health.

A romance about an unlikely couple.

Gorou has a crush on his older stepsister Haru. Unfortunately for Gorou, Haru happens to love teasing him sadistically in every way possible.
A 4-koma comedy about their wacky day to day life and interactions.

Hoozuki-san Chi no Aneki - Nano Shucchouban and 2 chapters of Hoozuki-san Chi no Aneki - Nano Branch are included in volume 3.

A short story about a conservative older office worker dating a 20 years younger kōhai.

Included in the anthology GUSHmaniaEX R45.

This is compilation of 3 loosely connected stories of vampire/human romances, plus a short extra story.

1) The Lie Becomes Love Under the Moon
2) The Bride and Prince
3) The Beautiful Lady and the Vampire

An ordinary boy called Sherlock Doyle is captured and forced to put on his twin sister's dress by the Emperor's diplomat to be shipped to a small country called Ehren. His genius sister, Glinda, went missing two days before she's supposed to be sent to Ehren to be an royal tutor for the King's children. The sudden life change is too overwhelming for Sherlock, but he sees no way out. Later, he finds out the disturbing truth about the kingdom's intention with his sister.

500 years ago the people of the Kingdom of Awa lived in fear of Youkai whom are attempting to take over the kingdom. In the midst of this Inuzuka Shino is entrusted with a sword from her father and goes out to find companions.

From: Paradise Love Scanlations

Yoneda Hikari, a business student at the culinary school, was tricked into giving up his dorm room and now has to share an apartment with 8 other people. Yoneda is hopeless at cooking; the only thing he can make is Miso soup. But his optimistic and kind hearted nature draw other residence to him, including Karasawa-san, also known as “curry man”. From the moment Yoneda stepped his foot into this boarding house his everyday life became full of adventure. Can Yoneda get along with this diverse group of people and make a home for himself?!

1) To the Sea
While his parents are away, Yutaka is to be watched over by the strict Naruhiko. The only plus is the mysterious beauty Yutaka meets at the swimshore, who is somehow familiar to him. And what is the connection between this beautiful swimmer and the cold Naruhiko...?

2) I'm Not Your Mama
Shou is outwardly the tough leader of a school gang, but at home he acts the part of mother to his two younger brothers. One day David, the leader of a rival gang, finds out the hidden side of Shou as well as a certain embarrassing secret. David claims he has feelings for Shou and that his secret is safe, but can Shou really trust him?

From Mousou Scans:

Eva, a long-lived witch, takes in Fernest kingdom’s fifth prince, Louis, when she is asked to heal the first prince of an illness. Although witches are traditionally despised, Louis forms a close bond with her. When Louis is called back to the palace by a strange twist of fate to take his father's place on the throne, Eva must decide whether to let him go or follow.