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