Kobato, along with Kengo, tries to get to the bottom of Sakagami's motives. It seems there is more to the case than initially suspected. However, Kobato's concern for Osanai is also growing.

Kobato finds Osanai crying in the school hallway, but she runs away without telling him what happened. At the student newspaper club, a new mystery involving Berliner Pfannkuchen (jelly doughnuts) awaits him.

To top off their summer sweets tour around the city, Osanai treats Kobato to a Tropical Parfait as thanks for rescuing her. Along with this delicious treat, Kobato is also served the whole truth about Osanai's kidnapping.

Urino begins writing articles predicting the locations of the next suspicious fires.

Urino has a plan to catch the arsonist in the act.

Kobato remembers his encounter with Osanai when they were in middle school.

In the hospital, Kobato thinks back to the circumstances around Hisaka's car injury in middle school.

Kobato and Osanai finally find out the whole truth and get help from an old acquaintance.