This book contains two stories, "十二月の都大路上下(カケ)ル" and "八月の御所グラウンド". Both of them are really interesting, and the book is relaxing and easy to read—I finished it in just two hours. Both stories contain mystery elements, which makes them very compelling. However, after thinking about it carefully, I can still only give it 3.5 stars overall. (Although both stories are engaging, their endings feel unfinished. Some might say the author intentionally leaves room for the reader’s imagination, but to me, the endings felt somewhat empty and lacking follow-through.)