AIKa ZERO: Season 1

3 episodes Premiered Mar 1, 2009 Updated Oct 1, 2026

AIKa ZERO Season 1 continues the overarching saga across 3 episodes.

Previously on AIKa ZERO

Season 1 Lore Primer

Key plot threads, lore context, and character stakes you need to remember before diving into this season.

⚡ Picks up essential narrative continuity directly following the events of AIKa ZERO Season 1.
⚡ Character alliances, factions, and personal loyalties undergo significant shifts under escalating stakes.
⚡ Addresses unresolved cliffhangers and thematic mysteries introduced during previous seasons.
⚡ Establishes the primary seasonal conflict that drives serialized character arcs toward the finale.

Season overview

AIKa ZERO Season 1 continues the overarching saga across 3 episodes.

Season 1 Episodes

Episode Guide

🛡️ SPOILER SHIELD

Season 1 Progress Shield

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Season 1: Filler vs. Essential Canon

Filter episodes by narrative weight. Focus on essential mytharc and skip standalone side quests.

67%

33%

Mytharc (2): Crucial lore & season climaxes

Core (1): Character development & subplots

Side Quest (0): Standalone / filler

S1·E1 Mytharc

White Knights

Mar 1, 2009

19-year-old Aika reunites with Eri and Karen to investigate the serial disappearances of school girls at St. Aero academy. Some of the girls have returned but without any memories

S1·E2 Core

E.T.A.I.

Oct 26, 2009

Miyu's back story is expanded upon regarding how she encountered the aliens and then influences her classmates to join her in the student council. The army takes over responsibilit

S1·E3 Mytharc

Zero

Dec 29, 2009

E.T.A.I. holds Aika captive and attempts to probe her, but the tendrils are broken by Aika's inherent power. E.T.A.I. and Miyu go to the spaceship where E.T.A.I. reveals that Aika