Jin is on his way to adulthood without any motivation in his life. He is still a virgin at 19 and even took a leave of absence from university. While pondering his life, he almost gets hit by a falling suitcase that upon opening it, had a small human like alien inside.
This is a very interesting manga to read. Very cute to read.
Narumi, a university studnets meets a pink kigurumi (Arita) rabbit in the street. Arita fell in love with Narumi at first sight. However, Arita never takes off his rabbit costume no matter what they do. Later Arita confesses that he is an Under grounder and will die (germs, radiation etc) if he takes off his costume which is actually a protective body suit.
Scientist named Shirou who lives alone on the polluted earth after he created a method to purify the earth. Unfortunately, the process kills butterflies who absorbs the pollution,crystallizes and falls to the ocean where they sink.
A wizard,demon breaker, was asked to get rid of a high class demon, he decided to make the demon his through sexual means after his spell did not work.
Yuuki paints on behalf of his father as a ghost painter but that forces him to stay indoors and away from people. When Yuuki wants to be alone, he likes spending time in an abandoned house which he was told as a child to avoid since a monster lives there. It was only recently that Yuuki met this monster who turned out to be a depressed Vampire who seeks death.
Fushidara Sei no Oujisama