Gnosia

Yuri awakes aboard the space cruiser D.Q.O. with no memories. Setsu brings him to a meeting to identify the harmful presence known as Gnosia.

Having looped back to the first day, Yuri begins the meeting armed with knowledge of who the Gnosia is and tries to shift suspicions toward SQ.

The meeting begins with two new members: Shigemichi and Stella. Yuri has a hunch who the Gnosia is but struggles to convince the other passengers.

Waking up once more at the start of a new loop, Yuri encounters a new, strangely imposing crew member named Yuriko, who seems to know something.

The meeting begins with the new members, Chipie and Comet. When two people claim to be the Engineer, Racio says nobody should vote for either of them.

Two additional members, Jonas and Kukrushka, join the ship's crew. In the next meeting, Yuri is assigned the new role of Guardian Angel.

The crew now has three new members: Otome, Remnan, and the stubborn Sha-ming, who refuses to leave his room. Shigemichi says he has a crush on Stella.

Remnan and Kukrushka are confirmed as human, having been on Guard Duty. When Kukrushka points a finger at Sha-ming, he takes a surprising action.

After awaking as a Gnosia, Yuri feels hesitant to deceive the others alongside Comet but resolves to fulfill his promise to Setsu and play the role.

Yuri awakes to a surprise. When the meeting is postponed due to Sha-ming's refusal to attend, Racio tells Yuri the secret of the Silver Key.