Rena attends a Mystery Kiss event to see if Yuki remembers her from their high school days. While continuing their investigation of Odokawa, Sato discovers that the man who beat him up on their first job was the infamous criminal Dobu.

Rena pays a visit to Donraku and Kabasawa. Sato tries to tail Dobu to get his stolen photos back, but is caught in the process.

Rena continues to try and uncover the secrets behind Mitsuya Yuki, and recruits Kanon and Sato to help her tail the members of Mystery Kiss. Meanwhile, Kakihana continues to dig himself into a deeper hole.

The body of the real Mitsuya Yuki is found, and all the threads start to come together. Rena confronts Nikaido Rui as she closes in on the truth.