Goku, the lone wolf private detective is back, contracted by Yoshiko, a mysterious, beautiful and very afraid woman, to find and save her brother, Ryu. Will Goku be able to protect Yoshiko from her step father's soldiers long enough to find her brother? Meanwhile Ryu, the unfortunate subject of a military experiment gone bad, leaves a trail of bodies behind him and has no intention of being found or saved by anyone. Will Goku have to kill the man he is supposed to save? Will even his omniscient cybernetic eye and sceptre be enough to help him defeat this indestructible killing machine?

In the story, the protagonist Youtarou Misaki finds himself lying on the beach one day. He is picked up by Arashi, who manages a restaurant called Kurage no Shokudou. When asked who he is, the protagonist tells a lie that he lost his memory—but he remembers everything, including the fact that his twin brother died.

Meet Galan, a Russian spastic geek who`d do anything to be a real, live samurai. But that`s just an impossible dream... or is it? When his friend Natsu, who is a successor of Japanese emigrants family, gives him the gift of an ancient sword, strange events unfold, and even stranger people drop out of the sky to attack. Now Galan must overcome his ineptitude and join a bunch of beautiful women in a wacky romp through a kingdom that time forgot. Hey, what could be better?

Kazuna's family has a history of suffering from a disease that creates an uncontrollable vampire-like thirst for blood. Knowing none of this, Kazuna was sent to live with the Eda couple as a child. As the sickness begins to show signs of being present within himself, he comes into contact with his older sister, Chizuna, who has been suffering from it since early childhood. Knowing that the sickness incurs a heavy weight upon those that suffer from it, Chizuna tries to ease her brother's burden, to help him learn to control his urges, but...