Hyakko: Yorozuya Jikenbo!

Torako and her friends find a room of the group called Yorozuya at school. According to rumor, what Yorozuya do are to look for the thing someone lost, give an advice to someone who has a concern, and do research on someone's affairs. Yes, it's more like detective's work. Torako is attracted to Yorozuya and decides to join it (Of course, her friends are also forced to join it). They soon receive a message from the boss of the group, "I'll test your ability. If you fail, you'll be strictly punished..." Well, will Torako and her friends make it?

Hyakko takes place in the high school division of Kamizono Academy, a fictional gigantic private institution located in Kyūshū, Japan, in which the motto is "to bring up talents of students in all departments and fields". Its storyline focuses on the comedic school life of the four main heroines, Torako Kageyama, Ayumi Nonomura, Tatsuki Iizuka, and Suzume Saotome. As the plot progresses, Torako and her friends gradually begin to learn and interact with their classmates in Class 1–6, in which each student has a unique and extraordinary personality.