After a long conversation, Osanai and Kobato come to the conclusion that their agreement has failed – and with it, their friendship. From then on, they go their separate ways.

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

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

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.