The Detective Is Already Dead

When Kimizuka witnesses a plane hijacking, he becomes the sidekick of the detective who stops it.

Nagisa Natsunagi, inspired by her transplant heart, meets Kimizuka; Kimizuka gets information from an unexpected source.

Kimizuka and Natsunagi take on detective responsibilities; Yui Saikawa asks them to protect a sapphire, but there is something bigger at stake.

Kimizuka and Natsunagi try their best to protect Yui Saikawa who is performing a stadium show. However, the two start to suspect that the idol has been hiding some secrets.

Siesta and Kimizuka investigate Cerberus' murders; Siesta develops a desperate plan which Kimizuka doesn't like.

Siesta injures her leg in the sudden battle against SPES's top executive, Hel. While Siesta recovers, Kimizuka meets a mysterious girl in the back alley.