Koyomi and Ougi find themselves trapped in a classroom, and the story shifts back to the point when Suruga introduces Ougi to Koyomi. Ougi approaches him with a mystery about a room not seen in the school's blueprints for them to investigate. When they enter the room, they find themselves trapped inside, leading them to their current situation. While talking about their predicament, the duo realize that the room is an oddity created by a traumatic memory from Koyomi's freshman years. Koyomi then tells Ougi that two years prior, the class president at his and Hitagi's class at the time, Sodachi Oikura, was looking for possible culprits of cheating on a math test, and would not allow any student to leave class until a culprit was found. Ougi surmises that they themselves won't be able to leave the room until the two-year-old mystery is solved.
- Directed by
- Tomoyuki Itamura
- Written by
- Fuyashi Tou, Megumi Hinata, Akiyuki Shinbo
All episodes — Owarimonogatari
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S4 E2Sodachi Riddle (1)
Oct 11, 201525 min
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 r
S4 E3Sodachi Riddle (2)
Oct 18, 201525 min
Having rediscovered the room on the second floor of the ruined house, Koyomi tells Ougi of the events that happened there five years earlier.
S4 E4Sodachi Lost (1)
Oct 25, 201525 min
Hanekawa reveals her concerns about Ougi as she and Araragi go to visit Oikura.
S4 E5Sodachi Lost (2)
Nov 1, 201525 min
Araragi and Hanekawa visit Oikura and learn the painful story of her family's past.
S4 E6Sodachi Lost (3)
Nov 8, 201525 min
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.
S4 E7SHINOBU Mail (1)
Nov 15, 201525 min
Koyomi Araragi waits in the ruins of the cram school to ask Suruga Kanbaru for help, a request he hopes she will refuse.