The crazy hilarity continues in the second volume of Moonlight Kreuz! Just when everything finally settles down, Gen and Hikari find themselves in the middle of another case with a possible connection to the Wolf Association. Gen is surprised to discover that his younger brother, Satsuki, is involved. Hikari, on the other hand, finds Satsuki with his major brother complex a bitter rival for Gen's affections. With the added distraction of Claude's return, will everything turn out all right? And why does Satsuki seem to know more than he is letting on? Gen and Hikari are surprised by the answers that are revealed – especially with the arrival of Gen's stepmother!