Season 1

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  10.0/101 votes

  Confinement

  Season 1 Episode 1 - Aired 9/7/2024

  When Ryoka, a high school girl, wakes up, she is left behind in a sealed-off apartment. A message from her mother tells her that there is a mysterious creature called "X" in the apartment.

  Director: Unknown

  Writer: Unknown

• 

  10.0/101 votes

  Reunion

  Season 1 Episode 2 - Aired 9/14/2024

  When Ryoka hears that her childhood friend Shuhei is also left behind in the apartment, she calls him. What is the ecology of "X" that her mother told Ryoka as she waits for Shuhei to join them?

  Director: Unknown

  Writer: Unknown

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  10.0/101 votes

  Brainwashing

  Season 1 Episode 3 - Aired 9/21/2024

  Ryoka and Shuhei manage to escape from "X" just in the nick of time. They try to leave the apartment, but suddenly lose consciousness.

  Director: Unknown

  Writer: Unknown

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  10.0/101 votes

  Encounter

  Season 1 Episode 4 - Aired 9/28/2024

  X has good hearing and walks on two legs. Ryoka is perplexed by the fact that X has different characteristics than what she saw in her dream, but first she heads to the fourth floor where Shuhei is waiting to meet up with her.

  Director: Unknown

  Writer: Unknown

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  10.0/101 votes

  Resistance

  Season 1 Episode 5 - Aired 10/5/2024

  Thanks to Shuhei's quick thinking, he manages to distract X's consciousness. However, X's pursuit does not stop, and Shuhei is eventually captured by X.

  Director: Unknown

  Writer: Unknown

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  10.0/101 votes

  Light

  Season 1 Episode 6 - Aired 10/12/2024

  Ryoka and Shuhei make use of X's blindness and reach the elevator safely. What awaits the two on the 31st floor, which should not exist?

  Director: Unknown

  Writer: Unknown

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  N/A/100 votes

  Inheritance

  Season 1 Episode 7 - Aired 2/22/2025

  Ryoka and Shuhei have made it to the 31st floor, which shouldn't exist in the apartment building, and have cleared level 2.

  Director: Unknown

  Writer: Unknown

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  N/A/100 votes

  Signpost

  Season 1 Episode 8 - Aired 3/1/2025

  Ryoka discovers a candy house. There, she finds a witch who is a level 3 X. Ryoka is thrown into a loop again and heads off to confront the witch.

  Director: Unknown

  Writer: Unknown

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  N/A/100 votes

  Witch

  Season 1 Episode 9 - Aired 3/8/2025

  Ryoka and Shuhei fight the witch to save the captured Hansel and Gretel. The witch uses spider webs to immobilize the four of them.

  Director: Unknown

  Writer: Unknown

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  N/A/100 votes

  Foreknowledge

  Season 1 Episode 10 - Aired 3/15/2025

  After defeating the witch, Ryoka and Shuhei take the elevator to the 32nd floor.

  Director: Unknown

  Writer: Unknown

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  N/A/100 votes

  Blank

  Season 1 Episode 11 - Aired 3/22/2025

  Without any clues from the notebook, Ryoka and Shuhei challenge Level 4. Ryoka is driven to despair by the fear of being killed again.

  Director: Unknown

  Writer: Unknown

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  N/A/100 votes

  Future

  Season 1 Episode 12 - Aired 3/29/2025

  Having grasped the true identity of X, Ryoka and Shuhei make a desperate attempt to conquer Level 4.

  Director: Unknown

  Writer: Unknown