Fireworks (2018) Plot Summary & Ending Explained

The glass marble is a mysterious orb that grants the wielder a single wish to redo a moment in time. When Norimichi throws it while wishing for luck, time rewinds back to before the swimming race, allowing him to change the outcome. Each subsequent throw resets reality again, but the timeline branches differently with each use, creating alternate realities where events unfold in new ways.

• glass marble
• time travel
• time loop
• rewind
• magical object

Nazuna's mother is remarrying a man she barely knows, and Nazuna feels powerless against this major life change. She sees running away with a boy as her only escape from a future she didn't choose. Her packed suitcase and desperate attempt to board the train represent her fight against losing control over her own life.

• Nazuna
• run away
• mother
• remarriage
• escape

Yusuke's violent outburst stems from jealousy and emotional instability. After Norimichi changes the timeline and wins the race, Nazuna chooses Norimichi instead of Yusuke. This rejection, combined with watching them escape together, triggers Yusuke's rage, leading him to shove them off the balcony in a moment of unchecked jealousy.

Foreshadowing: Earlier timeline events established Yusuke's interest in Nazuna and his competitive dynamic with Norimichi.

• Yusuke
• jealousy
• balcony
• violence
• rejection

The ending is deliberately ambiguous. Norimichi and Nazuna end up trapped in a glass dome within their own town after the final time jump. When a pyrotechnician uses the marble as a fireworks charge, it explodes in the sky. The next day, both students are missing from school, leaving their fate uncertain. They may have died in the explosion, escaped to another reality, or simply vanished from existence.

• ending
• death
• disappearance
• glass dome
• fireworks explosion

The glass dome represents a liminal space between reality and fantasy, where Norimichi and Nazuna exist outside normal spacetime. It can be interpreted as their own isolated world created by repeatedly altering time, or a metaphor for the protective bubble of their youthful dreams colliding with harsh reality. The dome traps them in their own town, suggesting they can never truly escape the consequences of their choices.

• glass dome
• symbolism
• ending
• reality
• dream

The debate about whether fireworks appear round or flat serves as a metaphor for perspective and reality. When Norimichi realizes he's in an alternate timeline where fireworks appear flat, it signals to him that reality has changed. The question of how things appear depends entirely on one's viewpoint, which mirrors the film's exploration of how changing the past creates new realities.

Foreshadowing: The debate early in the film establishes the theme of perspective and reality being subjective.

• fireworks
• flat
• round
• debate
• perspective
• reality

Yusuke unexpectedly backs out of his date with Nazuna after winning the swimming race. While the exact reason isn't explicitly shown, it appears he loses interest or confidence once he actually gets what he wanted. This abandonment triggers Nazuna's mother to take her away, setting up Norimichi's desperate decision to use the marble.

• Yusuke
• date
• cancel
• Nazuna

In the shattered glass after the fireworks explosion, Norimichi and Nazuna see visions of their potential future together, a glimpse of what could have been if things had turned out differently. This moment represents hope and acceptance as they embrace, acknowledging their feelings for each other despite the uncertain circumstances.

• glass shards
• future
• vision
• together
• embrace

Norimichi uses the marble at least four times: first when he throws it after Nazuna is taken, second from the lighthouse to help her board the train, third after the balcony incident, and finally at the glass dome to create the final timeline. Each use creates a different branch of reality with altered outcomes.

• rewind
• time jumps
• marble
• alternate timeline

Moshimo means "if" in Japanese, which directly reflects the film's central theme of exploring hypothetical scenarios through time manipulation. The entire story is about the "what ifs" of teenage life, what if Norimichi had won the race, what if they escaped, what if they could undo mistakes. The town name encapsulates the narrative's exploration of choices and their consequences.

• Moshimo
• if
• town name
• theme