Character Relationship Map: Fly On

Characters

• Watako (played by Mugi Kadowaki) — protagonist
• Fuminori (played by Kentaro Tamura) — supporting
• Eri (played by Haru Kuroki) — supporting

Canonical Relationships

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

• Fuminori → Eri (Romantic Former Lovers) — Their long romantic history complicates Fuminori's current marriage.

  Eri tells Watako that she and Fuminori were together for fifteen years after meeting at university and broke up and reunited several times.

• Watako → Fuminori (Romantic Spouses) — They are married partners whose relationship forms the film's central emotional conflict.

  Watako and Fuminori are married, wear wedding bands, and exchange additional rings for times when they are not wearing their wedding bands.

Story Dynamics

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

• Watako → Eri (Conflict Adversaries) — Although their conflict is indirect, Eri becomes central to Watako's emotional crisis.

  Eri's disclosure of her renewed relationship with Fuminori causes Watako to confront the hidden history surrounding their marriage.

Story Analysis

A marriage built on affection is destabilized by family strain, buried grief, and a concealed romantic history.

Plot Progression

1. Rings Beneath the Strain — Watako and Fuminori enjoy an intimate camping trip while discussing children and their marriage. Domestic disagreements about Hiromu and household boundaries reveal underlying tension.
2. The Cost of Family Silence — Fuminori confronts his mother about moving and refusing to give her a spare key. Eri's stories of estrangement, suffering, and grief broaden the film's focus on damaged family bonds.
3. A Buried Romantic History — Eri reveals her fifteen-year relationship with Fuminori and their repeated breakups and reunions. Her disclosure exposes a renewed connection that Watako did not know about.
4. The Marriage Under Question — Watako connects Fuminori's Yamanashi trips to Eri and demands an explanation. Fuminori denies an affair, but the confrontation ends with distrust and no clear resolution.