Character Relationship Map: Kaiba

Characters

• Kaiba (played by Houko Kuwashima) — protagonist
• Neiro (played by Mamiko Noto) — protagonist
• Popo (played by Romi Park) — supporting
• Vanilla (played by Hisao Egawa) — supporting
• Chroniko (played by Chiwa Saito) — supporting
• Kochu (played by Aiko Hibi) — supporting

Canonical Relationships

Family, romantic, and professional connections based on plot evidence.

• Kaiba → Neiro (Lovers) — A deep romantic bond defined by shared trauma, memory loss, and eventual reunion.

  "S1E10 reveals their true memories and past, while S1E12 shows Neiro as the only one able to stop him with forgotten memories."

• Neiro → Kaiba (Memory-Bound Identity) — A temporal link where recovered memories bridge past trauma and present amnesia.

  "S1E7 Gel is revealed as Neiro, and S1E10 connects her memories directly to Kaiba\/Warp's past."

• Neiro → Popo (Leader and Follower) — A hierarchical dynamic where Popo provides the vision and Neiro executes leadership.

  "S1E9 Popo forms an uprising with Neiro leading the charge, establishing a clear command structure."

• Vanilla → Kaiba (Mission Partners) — A professional partnership centered on survival and investigation.

  "S1E1-7 they share missions, investigate the Lolo crash, and navigate planetary dangers together."

Story Dynamics

Alliances, conflicts, and narrative interactions that evolve throughout the story.

• Kaiba → Popo (Protector and Protected) — A protective alliance that shifts into political partnership during the rebellion.

  "S1E1 Popo saves Kaiba and helps him escape, while S1E8-9 Popo leads an uprising and coordinates with Kaiba's allies."

• Kaiba → Vanilla (Travel Companions) — A consistent partnership focused on survival and uncovering mysteries.

  "S1E1-7 they travel together on the freight ship, investigate crashes, and navigate multiple planets."

• Popo → Kaiba (Ideological Opponent) — A conflict arising from political strategy and perceived threats to the rebellion.

  "S1E9 Popo gets Neiro to try and kill Kaiba, creating temporary hostility during the uprising."

• Chroniko → Kaiba (Body Exchange Subject) — A narrative device where physical exchange creates a unique bond.

  "S1E4 Kaiba is in Chroniko's body, followed by Vanilla, leading to shared experiences in swapped forms."

• Kaiba → Chroniko (Temporary Ally) — A brief but impactful social bond formed through mutual aid and physical displacement.

  "S1E3-4 Chroniko helps Kaiba after a crash landing, leading to a body swap and shared vulnerability."

• Vanilla → Neiro (Accomplices) — Vanilla and Neiro share a common target status due to their indirect involvement in the Lolo disaster.

  "Both are involved in the Lolo crash incident and are wanted for their connection to the explosion."

• Kochu → Kaiba (Casual Acquaintance) — A minimal social interaction with no further development.

  "S1E2 Kaiba gets acquainted with Kochu among the packages on the freight ship."

Story Analysis

Structural breakdown of the single season's memory-driven journey

Plot Progression

1. Awakening & Transit — Kaiba awakens with amnesia, is rescued by Popo, and travels as a stowaway, encountering Kochu and surviving a memory tank explosion.
2. Planetary Journeys & Crises — The group navigates multiple planets, experiences body swaps, escapes junkyards, and investigates crashes while uncovering identities.
3. Rebellion & Unmasking — Popo exposes the Issoudan group and the fake Warp, forming an uprising that targets Kaiba and forces Neiro to question her memories.
4. Restoration & Final Stand — Neiro recovers her past, the fake Warp falls, and Kaiba survives to face the memory-eating plant, culminating in a memory-driven resolution.