[Machine Translation] What will happen to my summer vacation? My brother is a celebrity in the high school baseball world, and I - Fukuto, a 5th grader, am inconspicuous in the shadow of him. In Shinjuku, I meet Shinryori, a dancing girl in an ice shop, and Shunya, a quiz boy. And then I hear about the mystery of the missing treasure. Seriously? I have no choice but to look for it, do I? The three of them are struggling in a big city. They eventually get caught up in a big, bad incident.... A pop and cool full-length "Mystery Mystery" novel.