Echo/Zeon

In 1999, three high school friends navigate various mysteries and challenges together. One is a driven girl with a strong interest in money, another is a large, somewhat shy student skilled in karate, and the third possesses the unique ability to perfectly replicate any sound she hears. The trio frequently takes on cases brought to them by classmates, ranging from kidnappings to school legends, often finding themselves in the middle of both solving and accidentally causing problems. Their high school experiences are consistently eventful. A special chapter is included in the second volume.