Season 1

July 7, 2024

Kobato and Osanai made a pact to lead a quiet life as regular students upon entering high school. However, soon after, a handbag mysteriously disappears at the school, and Kobato is asked to help solve the case.

July 14, 2024

Kobato and Osanai are invited to Dojima's house, where he makes them cocoa using his special method. When Osanai leaves, Dojima asks Kobato about his change in personality.

July 21, 2024

During a class assignment, a vase in the cabinet seemingly breaks by itself, but there's an elaborate plan behind it. However, this mystery is quickly forgotten when Osanai sees the bicycle thief again and plots revenge.

August 4, 2024

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.

August 11, 2024

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.

August 18, 2024

Osanai ropes Kobato into her plans for the summer vacation. However, the cake he is supposed to buy for her proves to be irresistible, even for Kobato.

August 25, 2024

Just before a date with Osanai, Kobato runs into Kengo, who shares some disturbing news and leaves a strange message. Together with Osanai, Kobato tries to solve the mystery. However, shortly after, it appears that Osanai is in great danger.

September 1, 2024

When Kobato goes to visit Osanai at her home to invite her to eat candied apples, he learns that she has been kidnapped. Just as he leaves the apartment, he receives a mysterious message from Osanai and, with Kengo's help, sets out to find her.

September 8, 2024

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.

September 15, 2024

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.

April 6, 2025

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

April 13, 2025

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

April 20, 2025

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

April 27, 2025

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

May 4, 2025

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

May 11, 2025

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

May 18, 2025

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

May 25, 2025

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

June 1, 2025

Kobato wakes up in the hospital and sees a box of chocolates with a message from Osanai.

June 8, 2025

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

June 15, 2025

Kobato finally manages to see Osanai in the hospital, revealing a sinister and terrifying truth.

June 22, 2025

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