As Koyomi prepares for his duel, he learns of the crisis that Hanekawa is facing and must decide what battle he should fight.

Koyomi is confronted by Shinobu’s first minion, the original apparition killer. But instead of starting a battle, the samurai makes a simple request.

The group relocate to the North Shirahebi Shrine where Izuko Gaen tells them the story behind the location and the effect Shinobu’s first minion had on it.

Having finally arrived at the meeting place, Koyomi and Suruga find an unexpected person waiting for them. Before their reunion can take place, they must face an unexpected foe!

After a hurried departure from the cram school ruins, Koyomi and Suruga head toward the meeting place, only to encounter some difficulty along the way.

Koyomi Araragi waits in the ruins of the cram school to ask Suruga Kanbaru for help, a request he hopes she will refuse.

Ougi claims to have figured out the whereabouts of Oikura’s mother and, in her own way, helps Araragi and Hanekawa to solve the mystery.

Araragi and Hanekawa visit Oikura and learn the painful story of her family's past.

Hanekawa reveals her concerns about Ougi as she and Araragi go to visit Oikura.

In the aftermath of the previous day, Araragi is about to enter his classroom when Hanekawa informs him that a student absent all year is finally attending. The story pushes further into the past, as more of “what” makes Koyomi Araragi is revealed.

During the month of October of his third year in high school, Koyomi Araragi is introduced to a transfer student named Ougi Oshino, who tells him she has something to consult with him. This reveals a tale that brings to light “what” makes Koyomi Araragi.