August 19, 2026 · 14 min read · Episode guide · Episode 86 · Kagex Blog

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One Piece Episode 977 Review — The Sea Is For Pirates!

Anime hub: One Piece · Wano Country

Contains spoilers for this episode.

One Piece Season 20 Episode 86 The Sea Is For Pirates! Raid! To Onigashima! official promotional art
Official promotional art. © Eiichiro Oda / Shueisha / Toei Animation

Kagex rating: 8.7 / 10

Episode: Season 20 · Episode 86 — “The Sea Is For Pirates! Raid! To Onigashima!” (overall #977)

Air date: June 6, 2021 · Runtime: ~24 minutes · Studio: Toei Animation

One Piece Season 20 Episode 86 “The Sea Is For Pirates! Raid! To Onigashima!” is overall TV episode 977, sitting inside the Wano Country 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 20 Episode 85 — Back to the Present Day! 20 Years Later! · Season: Wano Country 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. “The Sea Is For Pirates! Raid! To Onigashima!” is one of those bricks inside Wano Country — the Wikipedia/TV season that covers overall episodes 892–1088.

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 “The Sea Is For Pirates! Raid! To Onigashima!,” and what does it actually change?

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

Quick Information

  • Anime: One Piece
  • Season / Episode: Season 20 (Wano Country), Episode 86
  • Overall TV number: 977
  • English title: The Sea Is For Pirates! Raid! To Onigashima!
  • Runtime: ~24 minutes
  • Studio: Toei Animation
  • Original air date: June 6, 2021
  • Arc keywords: Wano Country Kaido Onigashima
  • Kagex score: 8.7 / 10
  • Where to watch legally: Crunchyroll / Netflix / region-dependent official platforms
One Piece official banner art for Season 20 Episode 86
Official banner art. © Eiichiro Oda / Shueisha / Toei Animation

Should You Watch It?

Yes if you are watching One Piece in order through Wano Country. Skipping “The Sea Is For Pirates! Raid! To Onigashima!” 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 #977 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 “The Sea Is For Pirates! Raid! To Onigashima!.” Fight-only skim culture will underrate quieter setup inside Wano Country. 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 20 Episode 86 (“The Sea Is For Pirates! Raid! To Onigashima!”) 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 #977. Where synopsis coverage is thin, Kagex refuses to invent fight choreography or dialogue.

Ordinary Voyage

None of the people who promised to arrive at Tokage Port arrive, not even Luffy. The Nine Red Scabbards realize that since they took over Udon, Kaidou’s forces will be informed of their presence soon. So, they have no choice but to set sail for Onigashima immediately, getting on a small rowboat to traverse the stormy waters. This marks the third time that their plans have been leaked to Kaidou’s forces. If you are bingeing for payoff, notice what information the episode forces the Straw Hats (or their opponents) to accept before the credits. Watching “The Sea Is For Pirates! Raid! To Onigashima!” in order matters because Wano, Country, Kaido context from earlier Wano Country episodes is assumed, not re-explained from zero.

Unexpected Incident

Kin’emon deduces that there must be a spy among Oden’s retainers. Kaidou hinted at a spy before but Kin’emon did not believe him until now. Kanjuro makes the shocking revelation that he was the traitor. If you are bingeing for payoff, notice what information the episode forces the Straw Hats (or their opponents) to accept before the credits. Watching “The Sea Is For Pirates! Raid! To Onigashima!” in order matters because Wano, Country, Kaido context from earlier Wano Country episodes is assumed, not re-explained from zero.

New Pressure

Being hunted for being a member of the Kurozumi Family his whole life, he decided to infiltrate Oden’s retainers, sending confidential information to Orochi. Back in Zou, he told Jack that Raizo was located there, and he told Orochi about the new rendezvous point given by Yasuie. Orochi sabotaged the mission by bombing all connecting bridges, as well as the Thousand Sunny. If you are bingeing for payoff, notice what information the episode forces the Straw Hats (or their opponents) to accept before the credits. Watching “The Sea Is For Pirates! Raid! To Onigashima!” in order matters because Wano, Country, Kaido context from earlier Wano Country episodes is assumed, not re-explained from zero.

First Discovery

Now aware of the Nine Red Scabbards’ whereabouts, Kaidou’s battleships are all lined up, ready to sink their rowboat. Kin’emon cuts down Kanjuro, only to reveal that it is only a drawing of him. If you are bingeing for payoff, notice what information the episode forces the Straw Hats (or their opponents) to accept before the credits. Watching “The Sea Is For Pirates! Raid! To Onigashima!” in order matters because Wano, Country, Kaido context from earlier Wano Country episodes is assumed, not re-explained from zero.

Important Encounter

The real Kanjuro is still at the port. He restrains Shinobu with drawn snakes and captures Momonosuke. If you are bingeing for payoff, notice what information the episode forces the Straw Hats (or their opponents) to accept before the credits. Watching “The Sea Is For Pirates! Raid! To Onigashima!” in order matters because Wano, Country, Kaido context from earlier Wano Country episodes is assumed, not re-explained from zero.

One Piece key visual relevant to Season 20
Official key visual. © Eiichiro Oda / Shueisha / Toei Animation

Story Analysis

“The Sea Is For Pirates! Raid! To Onigashima!” works or fails based on how clearly it advances Wano Country. 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 86 of Season 20 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 Wano Country, the recurring keywords — Wano Country Kaido Onigashima — 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 #977 sits between “Back to the Present Day! 20 Years Later!” and “The Worst Generation Charges in! The Battle of the Stormy Sea!”. 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 Wano Country finally detonates, earlier “small” hours become receipts. “The Sea Is For Pirates! Raid! To Onigashima!” 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 “The Sea Is For Pirates! Raid! To Onigashima!,” 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

Wano Country 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 — “The Sea Is For Pirates! Raid! To Onigashima!” — 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 Wano Country Kaido Onigashima, 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 20
Promo art. © Eiichiro Oda / Shueisha / Toei Animation

World Building

World rules visible in Season 20 Episode 86 stay local: how this island’s weather, government, Devil Fruit oddity, or cultural taboo constrains the crew. Wano Country is the container; “The Sea Is For Pirates! Raid! To Onigashima!” is one room inside it.

One Piece lore is famous for long payoffs, but this page will not smuggle future reveals into Episode 86. 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 “The Sea Is For Pirates! Raid! To Onigashima!” 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 20 (Wano Country) should be judged against its own production moment, not against a theatrical film.

For “The Sea Is For Pirates! Raid! To Onigashima!,” 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 9.2 / 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 9.2 / 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, “The Sea Is For Pirates! Raid! To Onigashima!” 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 “The Sea Is For Pirates! Raid! To Onigashima!” 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 86; 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 “The Sea Is For Pirates! Raid! To Onigashima!” claims on the tin.
  • Crew beat: a character choice that could only happen because earlier Wano Country 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 Worst Generation Charges in! The Battle of the Stormy Sea!” that makes continuing feel obvious.

Pros and Cons

Pros: Sequential clarity inside Wano Country; title-led focus; franchise sincerity; cumulative world pressure around Wano Country Kaido Onigashima.

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: 8.7 / 10 — “The Sea Is For Pirates! Raid! To Onigashima!” is a solid sequential stop in Wano Country — worth watching in order if you care how the Wano stretch builds, not a random highlight-reel skip.

  • Story: 8.6 / 10
  • Characters: 8.8 / 10
  • Animation: 9.2 / 10
  • Music: 9.2 / 10
  • Enjoyment: 9.2 / 10
  • Overall: 8.7 / 10

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

What to Expect Next

Next up is Season 20 Episode 87 “The Worst Generation Charges in! The Battle of the Stormy Sea!” (overall #978). Expect the Wano Country pressure to continue without needing spoilers beyond that title.

Next: Season 20 Episode 87 — The Worst Generation Charges in! The Battle of the Stormy Sea!. Watch legally on official platforms.

FAQ

Do I need to watch One Piece Season 20 Episode 86?

Yes if you are on the main TV track through Wano Country. Skipping “The Sea Is For Pirates! Raid! To Onigashima!” usually costs context, not just “filler vibes.”

What is the overall episode number?

Overall 977. Season-local number is Episode 86 of Season 20 (Wano Country).

When did it air?

June 6, 2021 in Japan (where listed). Runtime ~24 minutes. Studio Toei Animation.

Is this filler?

Season 20 is labeled Wano Country on the Wikipedia TV season map Kagex uses. Some seasons include TV-original blocks (notably Season 5). Judge “The Sea Is For Pirates! Raid! To Onigashima!” 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 20 review — Wano Country.

Does this spoil later arcs?

Deep sections spoil Episode 86. 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 “The Sea Is For Pirates! Raid! To Onigashima!” a continue episode or a skip-risk for you? Which crew beat hit hardest? Are you riding Wano Country 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.

8.7/10

“The Sea Is For Pirates! Raid! To Onigashima!” is a solid sequential stop in Wano Country — worth watching in order if you care how the Wano stretch builds, not a random highlight-reel skip.

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