After being exposed, Ougi is about to be engulfed by the darkness, but Koyomi refuses to give up on her and Meme reappears in the nick of time to save them.
Gaen assembles Koyomi, Shinobu, Mayoi and Yozuru and reveals that Ougi is the responsible for some of the previous ordeals they faced.
Mayoi takes Koyomi to meet Teori, who offers him a way to return to the world of the living. Koyomi is in doubt about accepting his offer, as he believes others like Mayoi are more worthy of reviving than him, until he comes with a surprising decision.
To stop Ougi from meddling further, Koyomi has a final confrontation with her.
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.
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.
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!
Araragi and Hanekawa visit Oikura and learn the painful story of her family's past.
Now fully human again, Koyomi is called by Hitagi for a date, as they spend some time together, Koyomi has a vision of Ougi.
The group relocates 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 rediscovered the room on the second floor of the ruined house, Koyomi tells Ougi of the events that happened there five years earlier.
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.
Hanekawa reveals her concerns about Ougi as she and Araragi go to visit Oikura.
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.
Koyomi and Hitagi spend the rest of the date bonding further. Once back home, Koyomi has another encounter with Ougi.
Three’s a crowd when Ko invites Akira to hang out with him and Nazuna late one evening.
Will Hina be able to give her home made lunch to the person she is concerned about? Tune in as a fateful meeting unfolds in front of our eyes...
Noé is on an airship bound for Paris, where he hopes to find the legendary "Book of Vanitas." He meets a woman named Amelia as the ship nears its destination, and then all hell breaks loose when a mysterious stranger appears. Has Noé's quest found him?
March 13th, the morning of college entrance exams. Koyomi Araragi has died due to Izuko Gaen. Mayoi Hachikuji was waiting for him in the afterlife, and guides him towards an unknown destination. Koyomi would have never thought that this certain someone would be waiting for him there.