01. Starting Point
Yuri, who has lost their memory, wakes up aboard the Interstellar Cruiser D.Q.O. They are taken by Setsu to participate in a meeting to identify the "Gnosia," a being that attacks and annihilates humans.
02. Loops
Yuri, who looped back to the first day, attends the meeting knowing who the Gnosia is. Yuri tries to cast suspicion on SQ, but the discussion doesn't progress as expected...?
03. New Crew Members
Shigemichi and Stella join the group, and a meeting is held with seven people. During the meeting, Yuri uses their intuition to identify the Gnosia, but they struggle to convince the other crew members.
04. Silver Key
Despite identifying the Gnosia and surviving, Yuri finds themself back at the first day in a daze, when a person with an unusual presence, Yuriko, appears before them. She seems to know something, but...?
05. Wild Intuition
New crew members Comet and Chipie join the meeting. Two of the crew claim to be engineers, but Racio argues against voting for them, resulting in the votes going to...?
06. Nostalgic Flowers
Yuri attends the meeting in a new role as the "Guardian Angel." With Jonas and Kukrushka joining, the meeting now has 13 people, and as the situation becomes chaotic, one crew member raises their hand.
07. Understand?
Otome and Remnan join in and the meeting is about to begin, but the other new crew member, Sha-Ming, refuses to come out of his room. Meanwhile, Shigemichi begins to talk about his feelings for Stella.
08. Guard Duty
Remnan and Kukrushka step forward as "Guard Duty," a role that confirms they are human. As the number of positions increases and the meeting becomes more complicated, Sha-Ming, who is suspected by Kukrushka, takes a certain action...
09. World of Gnosia
Yuri awakens as a Gnosia. Though they feel hesitant about deceiving their fellow crew members, they are touched by the feelings of Comet, who shares their position, and resolve to fulfill their role as promised to Setsu.
10. Citizen Slime
Yuri, who has looped once again, is astonished by their new appearance. Amidst this, the meeting is postponed due to Sha-Ming's absence, and Raqio reveals the secret of the Silver Key to the bewildered Yuri.
11. 511
Upon waking up, Yuri finds themself in a loop where they and SQ are on Guard Duty. Knowing that they are both human, the two grow closer, and eventually SQ reveals her true "identity"—.
12. Allacosia
Gina, who intensely dislikes lying and deceiving others, is confided in about the loops by Yuri. Recalling a painful past, she expresses her fear of and resistance toward becoming a Gnosia.
13. Interlude
Before the meeting, Setsu loses consciousness and is taken to the Sickbay. As they share the information they have acquired, Yuri suggests that Setsu, who appears exhausted from having repeated hundreds of loops, take a break.
14. 15-Person Meeting
"If you survive this loop, I'll tell you everything." Yuri, presented with a condition by Yuriko, attends a meeting where all 15 crew members are gathered. However, once the meeting begins, an unexpected proposal comes from Yuriko.
15. The Final Problem
Raqio, who was identified as a Gnosia by the Engineer, Yuri, claims innocence based on a certain action. The emergence of an AC Follower throws the meeting into chaos, and Yuri is cornered.
16. Episode 16
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17. Episode 17
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18. Episode 18
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19. Episode 19
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20. Episode 20
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21. Episode 21
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22. Episode 22
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23. Episode 23
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24. Episode 24
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