Detective Is Already Dead Gn Vol 03

"Due to my penchant for getting dragged into things, I, Kimihiko Kimizuka, an ordinary high-school student, suddenly was asked to protect national idol Yui Saikawa's Three-billion-yen sapphire!? When there's a detective, there's always a case, and so, another case begins for me and Siesta's heart's recipient, Nagisa Natsunagi!" Yen Press
(W) Nigozyu (A) Umibozu, Mugiko