Seasons & episodes
1 season · 26 episodes
Episode 01
The Forthcoming Time
Students train at the Liebe Delta station; tensions and relationships are introduced before disaster strikes.
Episode 02
Unnecessary Things
A sabotage incident begins to destabilize the station, causing confusion and mistrust.
Episode 03
Beyond the Vast Sea
The crisis escalates as the station is dragged toward the dangerous “Sea of Geduld.”
Episode 04
The Ring of Ryvius
The station is destroyed; surviving students escape aboard the hidden spaceship Ryvius, now stranded without adults.
Episode 05
A Little Harmony
Students begin forming a fragile society aboard the Ryvius.
Episode 06
My Moment
A coup led by Blue takes control; the Vital Guarder weapon system is discovered.
Episode 07
The Changing Times
Power struggles deepen as leadership fractures and factions form.
Episode 08
We Didn't Know Anything
The crew struggles to understand the ship and their situation.
Episode 09
Vital Guarder
The giant weapon is activated as external threats emerge.
Episode 10
Even If You Can't Believe
The Ryvius is attacked; it fights back but becomes a target of authorities and is forced to flee.
Episode 11
When the Party's Over
After a brief celebration, the crew are labeled terrorists; rationing and inequality begin.
Episode 12
Whereabouts of the Future
The crew debates their direction and survival strategy.
Episode 13
If Only to Meet
Personal relationships intensify amid isolation.
Episode 14
To Be Too Conscious
Class divisions and resentment worsen onboard.
Episode 15
Swept Away
The Ryvius drifts further from help; morale declines.
Episode 16
Deforming World
The ship’s internal society becomes increasingly unstable.
Episode 17
Free Order
Authority structures begin to collapse.
Episode 18
Incomprehensible
The survivors reflect on their failures and misunderstandings.
Episode 19
Smiling With You
Moments of humanity appear amid growing chaos.
Episode 20
Things You Can't Give Up
Ikumi seizes control of the ship using the Vital Guarder, enforcing strict rule.
Episode 21
We Don't Need Tomorrow
The crew becomes divided under harsh leadership.
Episode 22
In Order to Survive
Martial law intensifies as survival becomes the only priority.
Episode 23
Torn Past
Characters confront their past actions and guilt.
Episode 24
Kouji Aiba
Kouji challenges Ikumi’s rule as outside forces close in.
Episode 25
In Order to Stay as Myself
Personal identity and choices come to the forefront.
Episode 26
Tomorrow
With the Final battle and resolution, survival comes at a cost. The remaining crew moves toward an uncertain future.
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