Character Relationship Map: Chained Soldier

Characters

• Yuuki Wakura (played by Yuya Hirose) — protagonist

  A high school senior who accidentally enters the alternate dimension Mato and is attacked by Shuuki. Rescued by Kyouka Uzen, he becomes her combat slave to survive and later joins the Mato Defense For...

• Sahara Wakasa (played by Reina Ueda) — supporting
• Shushu Suruga (played by Mari Hino) — supporting
• Rairen (played by Kujira) — cameo

Story Dynamics

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

• Shushu Suruga → Sahara Wakasa (Competitive opponents) — They are temporary combat opponents in a formal squad competition.

  "Episode 6 directly identifies the event as a second-round match between Shushu Suruga of the 7th Squadron and Sahara Wakasa of the 6th Squadron."

• Yuuki Wakura → Sahara Wakasa (Squad opponents) — Their connection is shaped by inter-squad competition rather than personal hostility.

  "The second-round match is explicitly presented as Shushu Suruga of the 7th Squadron versus Sahara Wakasa of the 6th Squadron, while Yuuki is involved...

• Yuuki Wakura → Shushu Suruga (Playful squadmates) — Their relationship develops through teasing, domestic proximity, and Shushu's playful interest in Yuuki.

  "Shushu catches Yuuki unaware in the dorm, turns him into her boy toy, and later prepares a surprise for him."

• Yuuki Wakura → Rairen (Opposing combatants) — Rairen is associated with the hostile side of the Season 1 conflict, placing Yuuki within the opposing force.

  "A Season 1 episode centers on a confrontation with Rairen during a large-scale Shuuki-related operation, and the episode describes an interdimensiona...

Story Analysis

The narrative follows Yuuki's transition from accidental outsider to an indispensable participant in Mato's military and supernatural conflict. Across both seasons, personal bonds and competing authorities develop alongside an expanding war against increasingly powerful enemies.

Plot Progression

1. Season 1: Arrival and Service — Yuuki enters Mato after passing through a gate and is rescued from Shuuki. He becomes a caretaker for the 7th Squadron, establishing the domestic and professional framework of his new life.
2. Season 1: Squad Conflicts — The Shuuki threat expands while Yuuki becomes involved in squad abilities, rewards, and formal matches. His relationship with the squad grows through both combat and intimate dormitory routines.
3. Season 1: Abduction and Resolve — Yuuki is abducted after learning more about the conflict, and the battle reveals organized control over the demons. He ends the season with a personal reason to continue fighting and restore his siste...
4. Season 2: Command Pressure — A commanders' meeting marks a new political phase for the Defense Force. Interest in Yuuki intensifies as new powers and orders place pressure on his existing squad arrangement.
5. Season 2: Family and Authority — A family succession contest and a duel broaden the season beyond battlefield survival. Yuuki also becomes increasingly central to conflicts over authority, service, and personal proximity.
6. Season 2: Thunder God Escalation — Abductions and increasingly dangerous powers lead to major confrontations, including the Yokohama and Heaven battles. The immediate conflict reaches a climax, but the assembly of the gods makes clear...