The Detective Is Already Dead, Vol. 3 (manga)

Kimihiko Kimizuka, an average high-school student, finds himself in a new predicament when he is tasked with protecting a valuable sapphire belonging to national idol Yui Saikawa. As he navigates the challenges of this assignment, he teams up with Nagisa Natsunagi, who holds a special connection to the late detective Siesta. Together, they face unexpected twists and turns as they work to solve the mystery surrounding the sapphire and uncover potential threats. This volume continues the blend of mystery and drama that has defined the series.