Character Relationship Map: SANDA

Characters

• Kazushige Sanda (played by Ayumu Murase) — protagonist

  Middle school student whose body seal was broken by a classmate, causing him to transform into Santa Claus whenever he wears red clothes. He discovers a jellybean reversal method and agrees to help lo...

• Santa Claus (played by Hiroki Touchi) — protagonist

  The physical form Kazushige Sanda assumes after his body seal is broken, triggered specifically by wearing red clothing. Serves as the central visual and narrative motif of the story.

• Shiori Fuyumura (played by Umeka Shouji) — supporting

  Kazushige's classmate who intentionally broke his body seal. Her goal is to recruit Sanda to help find her missing classmate and to remind society about Christmas.

• Ichie Ono (played by Anna Nagase) — supporting

  A missing classmate of Shiori Fuyumura. Her disappearance drives the plot, as Shiori seeks Sanda's assistance in locating her.

• Hitoshi Amaya (played by Yuuki Shin) — supporting
• Nico Kazao (played by Misato Matsuoka) — minor
• Hifumi Ōshibu (played by Toshihiko Seki) — minor
• Saburō Yagiuda (played by Hiroaki Hirata) — minor
• Toyo Tetsudome (played by Masako Nozawa) — minor

Canonical Relationships

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

• Toyo Tetsudome → Santa Claus (Professional Associate) — Toyo has some connection to Santa Claus
• Saburō Yagiuda → Santa Claus (Professional Associate) — Saburō has some connection to Santa Claus
• Hifumi Ōshibu → Santa Claus (Professional Associate) — Hifumi has some connection to Santa Claus
• Kazushige Sanda → Santa Claus (Family Descendant) — Kazushige is discovered to be the descendant of Santa Claus

Story Dynamics

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

• Shiori Fuyumura → Hitoshi Amaya (Social Friend) — They are friends in school
• Toyo Tetsudome → Kazushige Sanda (Alliance Ally) — Tetsudome assists Sanda in his quest
• Saburō Yagiuda → Kazushige Sanda (Conflict Antagonist) — Yagiuda opposes Sanda's search for Ono
• Hifumi Ōshibu → Kazushige Sanda (Narrative Mentor) — Ōshibu serves as a mentor figure to Sanda
• Nico Kazao → Kazushige Sanda (Social Classmate) — They are classmates in school
• Hitoshi Amaya → Kazushige Sanda (Social Classmate) — They are classmates in school
• Kazushige Sanda → Ichie Ono (Narrative Missing Classmate) — Ichie is Sanda's missing classmate
• Shiori Fuyumura → Ichie Ono (Social Classmate) — They are classmates and Ichie is missing
• Kazushige Sanda → Shiori Fuyumura (Social Classmate) — They are classmates in school

Story Analysis

The season follows Santa Claus from an involuntary awakening through conflicts over truth, love, belief, and the protection of children.

Plot Progression

1. Awakening Santa — A Christmas-less day begins with an attack and a mistaken romantic expectation. Coercion and the headmaster's arrival reveal that Santa Claus is entering a dangerous hidden conflict.
2. Truth And Doubt — Santa Claus gains lie detection but struggles when the power intersects with self-harm and uncertainty. The funeral battle forces him to confront fear and reveal himself publicly.
3. Power Against Authority — A typhoon exposes Santa Claus's conflict between love and self-denial. The former opponent's arrival as a teacher leads into a defeat against the enhanced headmaster and a recovery through collective...
4. The Cost Of Protection — A friendship is sacrificed while the headmaster gathers violent students around his cause. Santa Claus tries to harden his heart, but emotional pressure pushes him toward a darker transformation.
5. Ceremony And Roof Duel — Santa Claus rejects fighting children while remaining vulnerable to intimacy. The ceremony collapses into a final confrontation, where truth and belief restore his power for the roof duel.