
One Piece Season 20 Episode 113 “An Inherited Technique! Unleashing Oden’s Secret Swordplay!” is overall TV episode 1004, 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 112 — A Heroic Blade! Akazaya vs. Kaido, Again Once More! · 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. “An Inherited Technique! Unleashing Oden’s Secret Swordplay!” 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 “An Inherited Technique! Unleashing Oden’s Secret Swordplay!,” 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 113
- Overall TV number: 1004
- English title: An Inherited Technique! Unleashing Oden’s Secret Swordplay!
- Runtime: ~24 minutes
- Studio: Toei Animation
- Original air date: December 19, 2021
- Arc keywords: Wano Country Kaido Onigashima
- Kagex score: 8.5 / 10
- Where to watch legally: Crunchyroll / Netflix / region-dependent official platforms

Should You Watch It?
Yes if you are watching One Piece in order through Wano Country. Skipping “An Inherited Technique! Unleashing Oden’s Secret Swordplay!” 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 #1004 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 “An Inherited Technique! Unleashing Oden’s Secret Swordplay!.” 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 113 (“An Inherited Technique! Unleashing Oden’s Secret Swordplay!”) 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 #1004. Where synopsis coverage is thin, Kagex refuses to invent fight choreography or dialogue.
Ordinary Voyage
As Queen continues firing Excite Bullets into the crowd, King orders Bao Huang to locate Kouzuki Momonosuke. Momonosuke is in the hallways, still being chased by Shinobu. Although Momonosuke and Shinobu attempt to hide from them by hiding on the ceiling, an explosion causes them to fall and be seen by Yamato. They run away from Yamato just as they are spotted by a black cat with Bao Huang’s mask. Nothing here is treated as later-arc homework; the page stays inside Season 20 Episode 113. Watching “An Inherited Technique! Unleashing Oden’s Secret Swordplay!” in order matters because Wano, Country, Kaido context from earlier Wano Country episodes is assumed, not re-explained from zero.
Unexpected Incident
With this, Black Maria continues her song hinting at a reunion. The song ends with Maria breaking the string of her shamisen. The Nine Red Scabbards work together to battle Kaidou. Nothing here is treated as later-arc homework; the page stays inside Season 20 Episode 113. Watching “An Inherited Technique! Unleashing Oden’s Secret Swordplay!” in order matters because Wano, Country, Kaido context from earlier Wano Country episodes is assumed, not re-explained from zero.
New Pressure
Raizo and Denjiro strike Kaidou’s underbelly, Kin’emon climbs onto his body and pierces his head, and Inuarashi and Nekomamushi strike him with Electro. Kaidou is still unharmed, flinging them to the ground before blasting them with lightning. Nothing here is treated as later-arc homework; the page stays inside Season 20 Episode 113. Watching “An Inherited Technique! Unleashing Oden’s Secret Swordplay!” in order matters because Wano, Country, Kaido context from earlier Wano Country episodes is assumed, not re-explained from zero.
First Discovery
Still, just like Oden twenty years ago, the samurai rise in the flames. They remember when Oden offered to teach his retainers Oden Two Sword Style, but they all refused. Nothing here is treated as later-arc homework; the page stays inside Season 20 Episode 113. Watching “An Inherited Technique! Unleashing Oden’s Secret Swordplay!” in order matters because Wano, Country, Kaido context from earlier Wano Country episodes is assumed, not re-explained from zero.
Important Encounter
So, using their individual fighting styles, they each take turns attacking Kaidou, each managing to pierce his body. Kaidou is still unharmed. Nothing here is treated as later-arc homework; the page stays inside Season 20 Episode 113. Watching “An Inherited Technique! Unleashing Oden’s Secret Swordplay!” in order matters because Wano, Country, Kaido context from earlier Wano Country episodes is assumed, not re-explained from zero.

Story Analysis
“An Inherited Technique! Unleashing Oden’s Secret Swordplay!” 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 113 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 #1004 sits between “A Heroic Blade! Akazaya vs. Kaido, Again Once More!” and “The Power of Ice Oni! A New Version of the Plague Rounds!”. 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. “An Inherited Technique! Unleashing Oden’s Secret Swordplay!” 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 “An Inherited Technique! Unleashing Oden’s Secret Swordplay!,” 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 — “An Inherited Technique! Unleashing Oden’s Secret Swordplay!” — 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.

World Building
World rules visible in Season 20 Episode 113 stay local: how this island’s weather, government, Devil Fruit oddity, or cultural taboo constrains the crew. Wano Country is the container; “An Inherited Technique! Unleashing Oden’s Secret Swordplay!” is one room inside it.
One Piece lore is famous for long payoffs, but this page will not smuggle future reveals into Episode 113. 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 “An Inherited Technique! Unleashing Oden’s Secret Swordplay!” 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 “An Inherited Technique! Unleashing Oden’s Secret Swordplay!,” 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 8.2 / 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 8.5 / 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, “An Inherited Technique! Unleashing Oden’s Secret Swordplay!” 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 “An Inherited Technique! Unleashing Oden’s Secret Swordplay!” 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 113; 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 “An Inherited Technique! Unleashing Oden’s Secret Swordplay!” 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 Power of Ice Oni! A New Version of the Plague Rounds!” 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: 8.5 / 10 — “An Inherited Technique! Unleashing Oden’s Secret Swordplay!” 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: 8.1 / 10
- Animation: 8.2 / 10
- Music: 8.5 / 10
- Enjoyment: 8.3 / 10
- Overall: 8.5 / 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 114 “The Power of Ice Oni! A New Version of the Plague Rounds!” (overall #1005). Expect the Wano Country pressure to continue without needing spoilers beyond that title.
Next: Season 20 Episode 114 — The Power of Ice Oni! A New Version of the Plague Rounds!. Watch legally on official platforms.
FAQ
Do I need to watch One Piece Season 20 Episode 113?
Yes if you are on the main TV track through Wano Country. Skipping “An Inherited Technique! Unleashing Oden’s Secret Swordplay!” usually costs context, not just “filler vibes.”
What is the overall episode number?
Overall 1004. Season-local number is Episode 113 of Season 20 (Wano Country).
When did it air?
December 19, 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 “An Inherited Technique! Unleashing Oden’s Secret Swordplay!” 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 113. 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
- One Piece anime hub
- Season 20 (Wano Country) review
- One Piece overall review
- Previous: Season 20 Episode 112 — A Heroic Blade! Akazaya vs. Kaido, Again Once More!
- Next: Season 20 Episode 114 — The Power of Ice Oni! A New Version of the Plague Rounds!
- Fact and Spoilers
- Browse reviews
Your turn
Was “An Inherited Technique! Unleashing Oden’s Secret Swordplay!” 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.