Amou Academy is an enormous educational establishment that boasts of 200,000 students and a gigantic campus that is actually its own city. Sakai Anzu is one of two members of the Detective agency operating on campus and is a normal high school girl. On the other hand, the other member, Yuri, is something out of this world. Yuri normally looks like a young girl but she is able to use sorcery to transform herself into a more mature appearance where she gains the ability to solve mysteries and crimes. There is one drawback however and it is that in that state, Yuri needs sexual energy to use her deducing skills and Anzu is there to give into her erotic needs.

A newly ordained priest named Theo Camming visits a rural town somewhere in Germany. However, his congregation gets attacked by Demoniacs and some of them had been humans. After being wounded, a female Blassreiter fighter arrives to save him and the rest of the village. However, she finds out that the priest was about to die.

A young boy, named Tien, hires a female hunter clad in red by the name of "Amu" to assist him in solving a series of murders & finding his beloved big brother. SoltyRei -Aka no Shukujo- is a unique volume oneshot set in the world of the anime series, SoltyRei.

Yuuichi Tate is overjoyed: He gets to go to a brand new high school. Of course, then he just happens to find out the school he choose is under frequent attack by strange creatures called ''Orphans'', and the school set up a special task force of female members called ''HiME''s, using various elements as their powers, to battle these invaders. That's not all, though. Each member of the HiME task force has their own, unique ''Key'', another person whom, upon being discovered, can team up with the HiME to create a ''Child'', a combative unit specifically needed to effectively battle these Orphans. And with Yuuichi's luck, he just happens to find out he's not just the ''Key'' for one of the HiMEs, but for two… Two highly competitive, rival schoolgirls. And that's only the start of the trouble.