Season 1
26 episodes · premiered Oct 6, 1999
Follow 487 stranded students forced to build a society aboard a spaceship after a disaster. Over time, their journey evolves from a survival drama into a psychological breakdown of leadership, power, and human behavior.
-
E1 The Forthcoming Time
Students train at the Liebe Delta station; tensions and relationships are introduced before disaster strikes.
-
E2 Unnecessary Things
A sabotage incident begins to destabilize the station, causing confusion and mistrust.
-
E3 Beyond the Vast Sea
The crisis escalates as the station is dragged toward the dangerous “Sea of Geduld.”
-
E4 The Ring of Ryvius
The station is destroyed; surviving students escape aboard the hidden spaceship Ryvius, now stranded without adults.
-
E5 A Little Harmony
Students begin forming a fragile society aboard the Ryvius.
-
E6 My Moment
A coup led by Blue takes control; the Vital Guarder weapon system is discovered.
-
E7 The Changing Times
Power struggles deepen as leadership fractures and factions form.
-
E8 We Didn't Know Anything
The crew struggles to understand the ship and their situation.
-
E9 Vital Guarder
The giant weapon is activated as external threats emerge.
-
E10 Even If You Can't Believe
The Ryvius is attacked; it fights back but becomes a target of authorities and is forced to flee.
-
E11 When the Party's Over
After a brief celebration, the crew are labeled terrorists; rationing and inequality begin.
-
E12 Whereabouts of the Future
The crew debates their direction and survival strategy.
-
E13 If Only to Meet
Personal relationships intensify amid isolation.
-
E14 To Be Too Conscious
Class divisions and resentment worsen onboard.
-
E15 Swept Away
The Ryvius drifts further from help; morale declines.
-
E16 Deforming World
The ship’s internal society becomes increasingly unstable.
-
E17 Free Order
Authority structures begin to collapse.
-
E18 Incomprehensible
The survivors reflect on their failures and misunderstandings.
-
E19 Smiling With You
Moments of humanity appear amid growing chaos.
-
E20 Things You Can't Give Up
Ikumi seizes control of the ship using the Vital Guarder, enforcing strict rule.
-
E21 We Don't Need Tomorrow
The crew becomes divided under harsh leadership.
-
E22 In Order to Survive
Martial law intensifies as survival becomes the only priority.
-
E23 Torn Past
Characters confront their past actions and guilt.
-
E24 Kouji Aiba
Kouji challenges Ikumi’s rule as outside forces close in.
-
E25 In Order to Stay as Myself
Personal identity and choices come to the forefront.
-
E26 Tomorrow
With the Final battle and resolution, survival comes at a cost. The remaining crew moves toward an uncertain future.