Reviewers note that while the premise suggests a dark suspense thriller, the execution is primarily a "high-volume ecchi comedy". The art style has been described as having a unique, slightly unsettling edge that fits the "mystery vs. desire" theme. Reader Consensus

The story follows Taro Yamada, a detective reincarnated as Tsukushi, the younger brother of three beautiful sisters who are destined to die on the same day—one of whom is purportedly his killer.

You can read the full series officially on platforms like Tonari no Young Jump .

Much of the series, including this late-stage chapter, focuses on the psychological game between Tsukushi and his sisters. As the title suggests, the "mystery" is often a vehicle for the sisters to "expose" their true, often eccentric or affectionate, feelings toward their brother.