Akagawa Jirou Mystery - Yasoukyoku - Hon ni Manekareta Satsujin (アカガワ次郎ミステリー～夜想曲～本に招かれた殺人) is a Nintendo DS game developed by Success and published by Takara Tomy. It is the first game in the Akagawa Jirou Mystery series, and it was released exclusively in Japan on October 29, 2009. The game is a mystery adventure game, where the player takes on the role of a detective, and must investigate a series of mysterious murders. Players must search for clues, interrogate suspects, and solve puzzles in order to progress in the game. The game also features a variety of mini-games which can be used to gain additional information and clues. The game's story follows the protagonist, Akagawa Jirou, as he is called upon to investigate a series of strange murders that have been occurring in a small rural village. In order to solve the mystery, he must piece together clues, interrogate suspects, and explore the village in search of the truth. Akagawa Jirou Mystery - Yasoukyoku - Hon ni Manekareta Satsujin is an intriguing mystery game that fans of the genre will enjoy. With its intricate story, challenging puzzles, and engaging mini-games, the game provides an enjoyable and unique experience.