August 19, 2026 · 14 min read · Episode guide · Episode 17 · Kagex Blog

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One Piece Episode 645 Review — Destruction Cannon Blasts!

Anime hub: One Piece · Dressrosa

Contains spoilers for this episode.

One Piece Season 17 Episode 17 Destruction Cannon Blasts! Lucy in Trouble! official promotional art
Official promotional art. © Eiichiro Oda / Shueisha / Toei Animation

Kagex rating: 8.1 / 10

Episode: Season 17 · Episode 17 — “Destruction Cannon Blasts! Lucy in Trouble!” (overall #645)

Air date: May 18, 2014 · Runtime: ~24 minutes · Studio: Toei Animation

One Piece Season 17 Episode 17 “Destruction Cannon Blasts! Lucy in Trouble!” is overall TV episode 645, sitting inside the Dressrosa stretch. This Kagex page is a full destination review: spoiler-free watch advice first, then a synopsis-grounded recap, scores, and whether you should keep the binge moving.

Previous: Season 17 Episode 16 — A Blow of Anger! A Giant vs. Lucy! · Season: Dressrosa season review · Hub: One Piece

Hook

One Piece does not ask you to judge a single episode like a movie. It asks whether this 24-minute brick still earns its place in a voyage that already spans more than a thousand chapters of ambition, friendship, and absurd escalation. “Destruction Cannon Blasts! Lucy in Trouble!” is one of those bricks inside Dressrosa — the Wikipedia/TV season that covers overall episodes 629–746.

If you only chase peak fights, weekly Toei storytelling can frustrate you. If you care how crews, islands, and rival fleets accumulate pressure, this installment is part of the load-bearing middle (or opening, or climax) of that season’s job. The question this page answers is simple: should a sequential viewer watch “Destruction Cannon Blasts! Lucy in Trouble!,” and what does it actually change?

Kagex scores below are for this episode only — not a grade for the entire Dressrosa saga and not a grade for the manga chapter it adapts.

Quick Information

  • Anime: One Piece
  • Season / Episode: Season 17 (Dressrosa), Episode 17
  • Overall TV number: 645
  • English title: Destruction Cannon Blasts! Lucy in Trouble!
  • Runtime: ~24 minutes
  • Studio: Toei Animation
  • Original air date: May 18, 2014
  • Arc keywords: Dressrosa Doflamingo Colosseum
  • Kagex score: 8.1 / 10
  • Where to watch legally: Crunchyroll / Netflix / region-dependent official platforms
One Piece official banner art for Season 17 Episode 17
Official banner art. © Eiichiro Oda / Shueisha / Toei Animation

Should You Watch It?

Yes if you are watching One Piece in order through Dressrosa. Skipping “Destruction Cannon Blasts! Lucy in Trouble!” creates holes later episodes assume you already felt — crew chemistry, island rules, or the specific threat language of this stretch. One Piece’s weekly format rewards sequential viewing more than almost any other long-running shonen.

Beginner-friendly as a random start? No. Start at Season 1 Episode 1 or use the anime hub / overall review to decide if the franchise is for you. Dropping into overall #645 cold will feel like arriving mid-conversation on a ship that already chose its captain.

Who enjoys this kind of episode? Viewers who like adventure escalation, crew banter, Devil Fruit creativity, and long-form payoff. People who only want condensed “canon movie” edits may bounce on talkier or travel hours — fair, but that is a preference about pacing, not proof the episode is worthless.

Bottom line: sequential fans should watch “Destruction Cannon Blasts! Lucy in Trouble!.” Fight-only skim culture will underrate quieter setup inside Dressrosa. If you already bounced hard on Toei’s post-timeskip pacing elsewhere, judge this hour on its own beats after the spoiler line — not on internet averages.

Spoiler Warning

Spoilers for One Piece Season 17 Episode 17 (“Destruction Cannon Blasts! Lucy in Trouble!”) follow. Stop above for a clean first watch. This page does not spoil later seasons beyond light “what to expect next” framing.

Story Recap

Recap below is grounded in publicly listed episode synopsis text for overall #645. Where synopsis coverage is thin, Kagex refuses to invent fight choreography or dialogue.

Ordinary Voyage

Gatz announces with surprise that Hajrudin has been defeated, referring to him as a favored warrior and speaking for everyone when he calls it unexpected. The crowd loves it and starts cheering for Lucy. Meanwhile, Luffy is helping Ucy to safety, saying he is taking the bull to the corner. Cavendish is unimpressed by Luffy’s power, while Bartolomeo seems to enjoy the display. Rebecca is completely shocked by Lucy’s might. In “Destruction Cannon Blasts! Lucy in Trouble!,” this beat sits inside the Dressrosa stretch rather than floating as a random filler hour. Watching “Destruction Cannon Blasts! Lucy in Trouble!” in order matters because Dressrosa, Doflamingo, Colosseum context from earlier Dressrosa episodes is assumed, not re-explained from zero.

Unexpected Incident

Ideo walks over the unconscious Hajrudin, remarks that the ring is no place for a nap and delivers an explosive punch that propels Hajrudin huge body into the audience stands, panicking spectators before it falls into the water. Gatz was again surprised to see the blasting force of Ideo’s punches, referring to him by his epithet “Destroyer Cannon”. Ideo then declares he will get stronger by eating the Mera Mera no Mi as he blasts away more fighters. Gatz then turns the crowd’s attention to the three fighters from Kano Country, referring to them as famous kenpo users. In “Destruction Cannon Blasts! Lucy in Trouble!,” this beat sits inside the Dressrosa stretch rather than floating as a random filler hour. Watching “Destruction Cannon Blasts! Lucy in Trouble!” in order matters because Dressrosa, Doflamingo, Colosseum context from earlier Dressrosa episodes is assumed, not re-explained from zero.

New Pressure

Sai is then seen shattering a fighter’s helmet and shield and knocking him out. Sai is then introduced as the thirteenth leader of the Happo Navy. Gatz refers to the navy’s power and centuries of martial experience. In “Destruction Cannon Blasts! Lucy in Trouble!,” this beat sits inside the Dressrosa stretch rather than floating as a random filler hour. Watching “Destruction Cannon Blasts! Lucy in Trouble!” in order matters because Dressrosa, Doflamingo, Colosseum context from earlier Dressrosa episodes is assumed, not re-explained from zero.

First Discovery

Boo is then seen defeating a contender and is introduced as the vice leader of the navy. Chinjao is lastly introduced as the retired twelfth leader of the Happo Navy, while he is being surrounded by a ring of fighters. As the gang attempt to move in on Chinjao, he presses his hands together and knocks out several fighters with Supreme King Haki, stunning the crowd. In “Destruction Cannon Blasts! Lucy in Trouble!,” this beat sits inside the Dressrosa stretch rather than floating as a random filler hour. Watching “Destruction Cannon Blasts! Lucy in Trouble!” in order matters because Dressrosa, Doflamingo, Colosseum context from earlier Dressrosa episodes is assumed, not re-explained from zero.

Important Encounter

Other fighters recall his bounty and legendary status as a pirate, and Chinjao turns to them and warns that he is only after one person so they should stay out of his way. Immediately in front of Chinjao, Jean Ango is seen collecting the weapons of fallen gladiators and thanks Chinjao for incidentally supplying them. In “Destruction Cannon Blasts! Lucy in Trouble!,” this beat sits inside the Dressrosa stretch rather than floating as a random filler hour. Watching “Destruction Cannon Blasts! Lucy in Trouble!” in order matters because Dressrosa, Doflamingo, Colosseum context from earlier Dressrosa episodes is assumed, not re-explained from zero.

One Piece key visual relevant to Season 17
Official key visual. © Eiichiro Oda / Shueisha / Toei Animation

Story Analysis

“Destruction Cannon Blasts! Lucy in Trouble!” works or fails based on how clearly it advances Dressrosa. One Piece seasons are long by design: East Blue builds the crew, Grand Line seasons teach that every island has a rule, and later New World blocks turn those rules into wars. Episode 17 of Season 17 is one turn of that machine.

Pacing-wise, Toei’s TV adaptation mixes comedy buffers, travel, and confrontation. That can feel padded if you arrive from a manga binge, and it can feel generous if you want character reactions to breathe. Kagex does not pretend every minute is peak sakuga. We ask whether the hour changes stakes, relationships, or information. In Dressrosa, the recurring keywords — Dressrosa Doflamingo Colosseum — tell you what kind of change to look for.

Emotionally, One Piece sells sincerity harder than irony. Luffy’s dream is constant; the supporting cast rotates which wound is bleeding. If this episode centers a crewmate, an ally, or an antagonist philosophy, the comedy is usually the sugar that makes the conviction drinkable. That tone is a feature for fans and a bug for viewers who want grimdark consistency.

Structurally, overall #645 sits between “A Blow of Anger! A Giant vs. Lucy!” and “The Legendary Pirate! Don Chin Jao!”. Read it as a chain link. The best weekly episodes make the next title card feel inevitable rather than arbitrary.

Compared with shorter modern cours, One Piece asks for patience. The trade is cumulative awe: when Dressrosa finally detonates, earlier “small” hours become receipts. “Destruction Cannon Blasts! Lucy in Trouble!” should be graded as one of those receipts, not as a standalone film.

Character Analysis

Monkey D. Luffy

Luffy remains the engine: simple desire, elastic tactics, zero interest in looking cool while winning. In “Destruction Cannon Blasts! Lucy in Trouble!,” watch whether he drives the incident, reacts to someone else’s crisis, or refuses a compromise that would be “smart” in any other series. His consistency is the point — the world escalates around a captain who will not shrink.

Straw Hat crew and allies

Dressrosa typically spotlights different crewmates depending on island rules. Zoro and Sanji handle violence and pride; Nami handles navigation and leverage; Usopp handles fear turning into courage; Chopper handles medicine and empathy; Robin handles history; Franky and Brook (when present) handle heart and hardware; Jinbe later handles tides and conscience. This episode’s title — “Destruction Cannon Blasts! Lucy in Trouble!” — is your hint for who the hour thinks matters.

Opposition / island forces

One Piece antagonists are rarely empty HP bars. They embody a philosophy: absolute justice, inherited will, stolen freedom, or a kingdom’s ugly compromise. Inside Dressrosa Doflamingo Colosseum, expect the opposition to teach the crew a rule of this sea. Even a mid-arc hour should clarify what winning would cost.

One Piece promotional art Season 17
Promo art. © Eiichiro Oda / Shueisha / Toei Animation

World Building

World rules visible in Season 17 Episode 17 stay local: how this island’s weather, government, Devil Fruit oddity, or cultural taboo constrains the crew. Dressrosa is the container; “Destruction Cannon Blasts! Lucy in Trouble!” is one room inside it.

One Piece lore is famous for long payoffs, but this page will not smuggle future reveals into Episode 17. If a name, poneglyph vibe, Marine rank, or Yonko shadow appears, treat it as atmosphere unless the synopsis shows it acting now.

Geography still matters. Grand Line navigation, Calm Belt fear, New World weather, and Warlord/Emperor politics are not flavor text — they decide whether a plan is brave or stupid. When “Destruction Cannon Blasts! Lucy in Trouble!” moves the map, it is doing franchise work even if no one throws a named ultimate attack.

Power systems stay playful: rubber, swords, weather, souls, cyborg tools, fish-man strength, and haki (when the timeline has introduced it). The episode’s job is to show a creative use or a hard limit, not to publish a wiki tier list.

Animation Review

Toei’s One Piece TV look has eras. Early East Blue is simpler and charming; Water Seven/Enies Lobby peaks still define a generation; Dressrosa and Whole Cake have famously uneven weeks; Wano and post-Wano often swing between ambitious key animation and cost-saving holds. Season 17 (Dressrosa) should be judged against its own production moment, not against a theatrical film.

For “Destruction Cannon Blasts! Lucy in Trouble!,” expect the usual TV priorities: readable action, expressive faces, and comedy timing. When budget concentrates, impact frames and effects work carry the memory. When it does not, character acting and layout still sell sincerity. Kagex animation score 8.1 / 10 reflects peaks vs comfort cuts for this hour — not a YouTube sakuga compilation ranking.

Direction matters as much as raw drawings. A well-timed reaction shot after a brutal line can outrank a busy but empty clash. One Piece thrives when the camera respects silence between punches.

Music and Voice Acting

Score 7.7 / 10. The franchise’s needle drops — We Are!, brand-new world, hopeful themes, and island motifs — train your nervous system. Even without listing every OP/ED cour change, “Destruction Cannon Blasts! Lucy in Trouble!” either rides that recognition or undercuts it with quiet strings.

Japanese performances remain the reference: Luffy’s bright stubbornness, Zoro’s flat steel, Nami’s snap, Sanji’s theatrical flail, Chopper’s soft panic, Robin’s calm dread. English dubs vary by era; do not wait on a preferred track to judge story.

Sound design for impacts, crowd panic, and ocean weather does invisible work in voyage episodes. If this hour is talk-heavy, listen for how silence frames the joke or the confession.

Hidden Details

  • Title card language in “Destruction Cannon Blasts! Lucy in Trouble!” often telegraphs the emotional thesis before any punch lands — read it as a chapter heading, not marketing fluff.
  • Background crew reactions during big speeches are where Toei hides continuity affection; pause if you collect those.
  • Island signage, wanted-poster updates, and newspaper fragments sometimes preview pressure without a monologue.
  • Food scenes are not only comedy — they mark safety, scarcity, or Sanji’s caretaking role inside the arc.
  • This page stays inside Episode 17; if a detail only makes sense after later episodes, it is not listed here as a “gotcha.”

Best Moments

  • Title promise: the hour’s clearest delivery of what “Destruction Cannon Blasts! Lucy in Trouble!” claims on the tin.
  • Crew beat: a character choice that could only happen because earlier Dressrosa episodes happened.
  • Opposition beat: a line or tactic that clarifies the island’s rule set.
  • Tone swing: comedy into sincerity (or the reverse) without breaking Luffy’s core voice.
  • Exit hook: the final push toward “The Legendary Pirate! Don Chin Jao!” that makes continuing feel obvious.

Pros and Cons

Pros: Sequential clarity inside Dressrosa; title-led focus; franchise sincerity; cumulative world pressure around Dressrosa Doflamingo Colosseum.

Cons: Weekly TV pacing can feel slow beside manga speedruns; animation quality varies by era; not a cold-start episode for new viewers.

Final Verdict

Kagex overall: 8.1 / 10 — “Destruction Cannon Blasts! Lucy in Trouble!” is a solid sequential stop in Dressrosa — worth watching in order if you care how the Dressrosa stretch builds, not a random highlight-reel skip.

  • Story: 8.2 / 10
  • Characters: 7.9 / 10
  • Animation: 8.1 / 10
  • Music: 7.7 / 10
  • Enjoyment: 7.9 / 10
  • Overall: 8.1 / 10

Watch it in order. Grade it as a voyage brick. Then decide whether Dressrosa still has you — not whether a random clip account clipped the coolest five seconds.

What to Expect Next

Next up is Season 17 Episode 18 “The Legendary Pirate! Don Chin Jao!” (overall #646). Expect the Dressrosa pressure to continue without needing spoilers beyond that title.

Next: Season 17 Episode 18 — The Legendary Pirate! Don Chin Jao!. Watch legally on official platforms.

FAQ

Do I need to watch One Piece Season 17 Episode 17?

Yes if you are on the main TV track through Dressrosa. Skipping “Destruction Cannon Blasts! Lucy in Trouble!” usually costs context, not just “filler vibes.”

What is the overall episode number?

Overall 645. Season-local number is Episode 17 of Season 17 (Dressrosa).

When did it air?

May 18, 2014 in Japan (where listed). Runtime ~24 minutes. Studio Toei Animation.

Is this filler?

Season 17 is labeled Dressrosa on the Wikipedia TV season map Kagex uses. Some seasons include TV-original blocks (notably Season 5). Judge “Destruction Cannon Blasts! Lucy in Trouble!” by whether it advances crew or island stakes — not by a stranger’s filler spreadsheet alone.

Where should beginners start?

Season 1 Episode 1. Use the hub and overall review for worth-watching framing.

Where is the season review?

One Piece Season 17 review — Dressrosa.

Does this spoil later arcs?

Deep sections spoil Episode 17. They avoid future-season dumps. “What to Expect Next” stays title-light.

Where are facts / spoilers for the franchise?

Fact and Spoilers on the hub. Episode pages stay local.

Who writes these?

Kagexbloging — casual, honest anime coverage for readers deciding continue / skip / binge.

Where to watch legally?

Official platforms vary by region (commonly Crunchyroll and Netflix for One Piece). Avoid illegal streams.

Keep exploring

Your turn

Was “Destruction Cannon Blasts! Lucy in Trouble!” a continue episode or a skip-risk for you? Which crew beat hit hardest? Are you riding Dressrosa weekly or bingeing?

Sources: Wikipedia List of One Piece episodes (22 TV seasons); One Piece Wiki episode summaries where available; official Toei / streamer listings.

Our reaction

Spoiler-aware take after the recap — how the episode felt to watch.

8.1/10

“Destruction Cannon Blasts! Lucy in Trouble!” is a solid sequential stop in Dressrosa — worth watching in order if you care how the Dressrosa stretch builds, not a random highlight-reel skip.

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