Sakuya Oizuki, a high school student whose father is a legendary detective, As a semi-private detective, he worked as a detective with an excellent beautiful girl assistant Lilithea, Triggered by the “special constitution” that dwells in Sakuya, and a request that came in one day, They get involved in a big incident, and their destinies change dramatically. “Really, a detective is a profession that is not enough no matter how many lives there are.” A new era mystery light novel, comicalized opening