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.

After starting to get involved with Osanai, Itsukaichi investigates a possible string of fires in the city.

There will be a change of pace in the school newspaper. Kobato shows an interest in serial fires.

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

Urino's rules spark escalating arson; Hiyori supports him while Osanai gives advice as bonds shift.

Urino and Kobato both arrive at the site of the final fire.

Kobato explains to Osanai how he arrived at his conclusion about the arsonist’s identity.