Petey is a female bounty hunter who’s perplexed by a mysterious bounty that was posted: the culprit is a fellow named Blue Cheese, but his bounty is -$100 – essentially there’s a fine for turning him in! Confused as to what this means, Petey chats with the seventeen-year-old bartender and mystery solver Suna to figure out what’s going on. Will she take up the strange bounty and figure out why it exists?
Fourteen-year-old Nico spends her free time on a cell phone-based dating service, but not for the reason you'd think. Hoping to someday become a fortune teller or maybe even a spy, the girl uses the dating service to determine what people are like merely by listening to the sound of their voice, and soon, she manages to accidentally befriend a Yakuza boss. Now Nico has the opportunity to use her curiosity, intellect, and keen sense of hearing to foil the schemes of kidnappers, crooked athletes, and forgetful assassins - but is it a good idea for a junior high school student to work for the Yakuza?
One day, while enjoying a nice cup of tea, the fanous detective, Amaru Hebizuka, is called to a girl's boarding school to investigate a crime. Four schoolgirls have recently been found dead in the dormitories with only one common factor: a teddy bear missing one limb has been found next to each victim. Now along with his assistant, Shiro, Hebizuka must unmask the culprit