One day at school, Youta Tada sees someone strange entering school. Out of nowhere this being appears next to him and makes him fall from the third floor! But before he hits the ground, he wakes up in a strange world where beings like dragons exist! Youta then meets a young paladin named Lumi and discovers that he is the only man on the entire planet, and also that its inhabitants are extremely 'weak' to his presence or more specifically, his touch. Would this be a paradise?

Nonomiya Yuuta, a ski Jumper aiming for Olympic gold, bursts onto the stage with his exceptional skills. However, his biggest problem is that he is not really a "HE"... The person claiming to be Nonomiya Yuuta is actually his twin sister, Nonomiya Nono... And with women's ski Jumping not being an official Olympic category, hiding her true identity is the only way for her to achieve the dreams of her father and brother and win Olympic gold.

From MangaHelpers:
When the two were still young, Saito and Kawana Subaru were close friends. But with Subaru coming from a wealthy family, she was sent to the top school while Saito had to settle for a regular education.
But after painfully studying for years, he was finally accepted as a high school freshman through a scholarship program that only a handful of students are awarded. But what Saito thought was going to be a heartwarming reunion turned out horrible. Subaru had grown up beautiful and was the most popular person in school as she was kind to everyone, all except towards Saito who she seemed to despise.
Almost regretting his decision to come to the school, Saito wishes that somehow their dorm rooms would connect to each other. Magically, because it turns out that Subaru wished the same thing, their wish comes true but, in return, Subaru loses her self-control for one hour per day. During that time, her erotic desire for Saito, that she can normally hide, comes pouring out and her true intentions are revealed.
He wants to take advantage of this once in a lifetime chance but doing so might jeopardize their relationship during the other 23 hours.

A collection of short stories including

• Allumage
Kumiko left Japan for LA in hopes of becoming a famous actress, but so far has only managed to get jobs as a stuntwoman. Now that her brother is getting married, she's coming back to Japan to visit, but once she arrives, something goes terribly wrong...

The story involves human mutations called "Diclonius", who grow horns on their heads and possess telekinetic powers, in the form of invisible "arms" called vectors.
The tendency for violence among Diclonii varies among characters. Certain scientists contain them in a Facility in cells, where they are subject to inhumane experiments to test their abilities or where they await execution for being too dangerous.
An infectious virus is also associated with the mutation. This virus is spread through non-lethal contact with the vectors of a diclonius.
The main non-mutant character in the story is Kouta, who ends up becoming increasingly involved with these dicloniuses, as they seek refuge from the scientists.
The main diclonius character is Lucy/Nyuu, a killer whose alter ego is a hapless and very cute child whose vocabulary and intelligence are quite limited.

When he was a child, Murakami was infatuated with a girl he called Kuroneko. She insisted on knowing about aliens and having met them, but no one believed her, even young Murakami was skeptical. One day, she decides to show him the aliens, but an accident occurs and Kuroneko dies while Murakami is left seriously wounded in the hospital.
Years go by and Murakami obsesses on finding proof of the existence of aliens because of a promise he had made with Kuroneko. Then, one day, a new transfer student comes to his class, who not only looks a lot like Kuroneko but is named Kuroha Neko.
And even though she insists on never having met Murakami before, the girl has superhuman strength and seems to even be able to predict the future!
How will Murakami's life change now that he has been saved by this mysterious girl that claims to be a magician?