the game was announced in november 2015, for both the japanese and international market. it was introduced as the first title in a line of adventure video games by kadokawa games, the "kadokawa game mystery" series. each entry in the series is planned to contain the same "fictional actresses" playing different roles across different titles. key staff from konami's "loveplus" series of dating sim games contributed to the game, including character designer mino taro, and producer akari uchida.