August 22, 2026 · 12 min read · Episode guide · Episode 17 · Kagex Blog

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Haikyuu!! S4 Episode 17 Review

Anime hub: Haikyuu!! · Nationals (To the Top)

Contains spoilers for this episode.

Haikyuu!! Season 4 — To the Top Episode 17 Cats vs. Monkeys promotional art
Official promotional art. © Haruichi Furudate / SHUEISHA / Production I.G

Kagex rating: 9.4 / 10

Episode: Season 4 — To the Top · Episode 17 — “Cats vs. Monkeys”

Air date: October 23, 2020 · Runtime: ~24 minutes · Studio: Production I.G

Haikyuu!! Season 4 — To the Top Episode 17 — “Cats vs. Monkeys” — reviewed in full Kagex format. Hub: Haikyuu!!. Previous: Season 4 — To the Top Episode 16 — Broken Heart.

Hook

People search haikyuu episode 17 review when they want a straight answer: worth watching, what changes, and how it scores — without a random spoiler dump. “Cats vs. Monkeys” is overall TV slot 77 (Nationals (To the Top)). “Cats vs. Monkeys” keeps Karasuno’s climb honest — no miracle reset, just the next problem on the court. In the second round of the Spring Tournament, Nekoma faces Sarukawa Tech High for the chance to advance to the third round. With Sarukawa an…

Spoiler-free top half; deep recap after the warning. Character links go to live guides where they exist.

Quick Information

  • Anime: Haikyuu!!
  • Season / Episode: Season 4 — To the Top, Episode 17 (overall #77)
  • English title: Cats vs. Monkeys
  • Arc: Nationals (To the Top)
  • Runtime: ~24 minutes
  • Studio: Production I.G
  • Original air date: October 23, 2020
  • Kagex score: 9.4 / 10
  • Where to watch legally: Crunchyroll / Netflix (region-dependent)
  • Characters: Shoyo Hinata, Tobio Kageyama, Daichi Sawamura, Koshi Sugawara
Haikyuu!! official banner Season 4 — To the Top Episode 17
Official banner art. © Haruichi Furudate / SHUEISHA / Production I.G

Should You Watch It?

Worth it? Yes if you are on the Haikyuu!! track in order. “Cats vs. Monkeys” is load-bearing for Nationals (To the Top), not clip fodder. Score 9.4/10 reflects this hour’s craft, team chemistry, and match pressure.

Beginner-friendly? Only after earlier episodes. Open Episode 1 first — the rivalry-to-teammates setup is the whole point.

Who bounces? Viewers who want zero practice, scouting, or bench talk. Haikyuu!! still spends minutes on receive form, setter ego, and why a free ball feels like a death sentence.

Bottom line: keep going if Karasuno’s noise already hooked you. Skip only if you already quit sports anime as a genre — this hour will not convert a hard no.

Spoiler Warning

Spoilers for Season 4 — To the Top Episode 17 (“Cats vs. Monkeys”) follow. Stop above for a clean first watch. No later-arc spoilers beyond this episode’s end.

Story Recap

Ordinary Life

In the second round of the Spring Tournament, Nekoma faces Sarukawa Tech High for the chance to advance to the third round.

Kagex beat note: “Cats vs. Monkeys” uses ordinary life inside Nationals (To the Top). Hinata’s jump instinct and Kageyama’s control freak precision keep colliding with real rotation rules — this recap stays inside Season 4 — To the Top Episode 17, no later-arc spoilers.

Unexpected Incident

With Sarukawa and Nekoma both being masters of defense, it becomes apparent that Sarukawa’s real plan is not to quickly rack up points but to instead get Kenma to exhaust himself.

Kagex beat note: “Cats vs. Monkeys” uses unexpected incident inside Nationals (To the Top). Hinata’s jump instinct and Kageyama’s control freak precision keep colliding with real rotation rules — this recap stays inside Season 4 — To the Top Episode 17, no later-arc spoilers.

Escalation

In the second round of the Spring Tournament, Nekoma faces Sarukawa Tech High for the chance to advance to the third round. With Sarukawa and Nekoma both being masters of defense, it becomes apparent that Sarukawa’s real plan is not to quickly rack up points but to instead get Kenma to exhaust himself.

Kagex beat note: “Cats vs. Monkeys” uses escalation inside Nationals (To the Top). Hinata’s jump instinct and Kageyama’s control freak precision keep colliding with real rotation rules — this recap stays inside Season 4 — To the Top Episode 17, no later-arc spoilers.

First Discovery

In the second round of the Spring Tournament, Nekoma faces Sarukawa Tech High for the chance to advance to the third round. With Sarukawa and Nekoma both being masters of defense, it becomes apparent that Sarukawa’s real plan is not to quickly rack up points but to instead get Kenma to exhaust himself.

Kagex beat note: “Cats vs. Monkeys” uses first discovery inside Nationals (To the Top). Hinata’s jump instinct and Kageyama’s control freak precision keep colliding with real rotation rules — this recap stays inside Season 4 — To the Top Episode 17, no later-arc spoilers.

Important Encounter

In the second round of the Spring Tournament, Nekoma faces Sarukawa Tech High for the chance to advance to the third round. With Sarukawa and Nekoma both being masters of defense, it becomes apparent that Sarukawa’s real plan is not to quickly rack up points but to instead get Kenma to exhaust himself.

Kagex beat note: “Cats vs. Monkeys” uses important encounter inside Nationals (To the Top). Hinata’s jump instinct and Kageyama’s control freak precision keep colliding with real rotation rules — this recap stays inside Season 4 — To the Top Episode 17, no later-arc spoilers.

Haikyuu!! key visual Season 4 — To the Top Episode 17
Official key visual. © Haruichi Furudate / SHUEISHA / Production I.G

Story Analysis

Production I.G’s Season 4 — To the Top Episode 17 board prioritizes readable faces when rallies stack camera cuts. “Cats vs. Monkeys” (Nationals (To the Top)) assumes you already care why Hinata jumps before he thinks and why Kageyama’s tosses feel like orders — that friction is the series engine, not a mid-season lecture.

Kagex story score 9.5 for this hour only: In the second round of the Spring Tournament, Nekoma faces Sarukawa Tech High for the chance to advance to the third round. With Sarukawa and Nekoma both being masters of defense, it becomes apparent … Compare binge pace vs weekly 2014–2020 drops — the episode was designed as a chapter, not a highlight clip.

Animation 9.4: serve tosses, block touches, and floor digs each get distinct timing. When the episode goes quiet (bench talk, bus rides, coach notes), composition still carries threat — scoreboard digits, jersey numbers, gym humidity.

Characters score 9.0: Karasuno never wins because one ace gets a power-up speech. Wins (and losses) come from who talks, who listens, and who adjusts mid-rally. Daichi’s calm, Suga’s reads, Noya’s chaos, Tanaka’s noise — role clarity is the craft.

“Cats vs. Monkeys” works when the scoreboard is allowed to hurt. Haikyuu!! rarely softens a lost set for vibes — it uses the loss to force a conversation, a lineup tweak, or a pride check. That honesty is why the wins later feel expensive instead of gifted.

Pacing inside Episode 17 is chapter pacing: setup → pressure → adjustment → residue. If a rally montage lands, it is because the episode already told you who is panicking and who is reading the court. Kagex does not invent opponent secrets that air later; the analysis stays local to this hour.

Character Analysis

Hinata still leads with vertical chaos — even when a rival school’s ace steals the spotlight, the episode tests whether his jump instinct can plug into a real system. Kageyama remains the precision problem: tosses that demand trust, ego that demands growth.

Captain energy from Daichi, soft-spoken reads from Sugawara, and the supporting gym (Noya, Tanaka, Tsukishima, Yamaguchi, Asahi) only matter when their jobs are visible. Supporting cast this hour should feel like people with positions, not crowd noise. Kagex does not invent manga-only scenes to pad word count.

Rival-facing hours may spotlight Oikawa, Kenma, Kuroo, Ushijima, Bokuto, or Akaashi — when they appear, watch how Karasuno’s language changes. The show’s best character writing is competitive empathy: respecting an enemy’s craft without sanding off the fight.

World Building

Miyagi high-school volleyball — club hierarchies, Interhigh / Spring High paths, scout culture, and gym politics — advances in Season 4 — To the Top. “Cats vs. Monkeys” adds Nationals (To the Top) rules: how practice translates to match day, what a libero changes about floor coverage, and why a left-handed ace or a freak quick is a system problem, not a highlight sticker.

This episode only: geography stays local to the schools and gyms on screen. No Nationals future-spoilers, no movie-only detours. The world is scoreboards, buses, and the next tough school on the bracket.

Animation

Production I.G on TV: elastic jumps, sweaty faces held long enough to read doubt, and court geometry that stays readable when six bodies collide at the net. Animation score 9.4 for this episode’s peak rallies vs dialogue coverage. Serve toss timing and block “touch” frames do more storytelling than any glowing aura ever could.

Music & Voice Acting

Score 9.0. To the Top (Season 4) swaps national-stage OPs in — “Phoenix” / “Toppakou” era energy. Nationals sound design sells crowd volume as a character. Japanese track is reference (Ayumu Murase, Kaito Ishikawa, and the wider Karasuno / rival casts). Crowd beds and squeak SFX are half the emotion — mute them and the sport flattens.

Hidden Details

  • Watch jersey numbers and rotation order after timeouts — Haikyuu!! hides strategy in who is front-row.
  • Eye-lines after a dig often telegraph the next toss choice better than dialogue.
  • Episode title “Cats vs. Monkeys” usually names the emotional receipt, not just the opponent.
  • Bench reactions are plot: who flinches, who smiles, who takes notes.
  • No manga chapter homework required for this page.

Best Moments

  • In the second round of the Spring Tournament, Nekoma faces Sarukawa Tech High for the chance to advance to the third round.
  • With Sarukawa and Nekoma both being masters of defense, it becomes apparent that Sarukawa’s real plan is not to quickly rack up points but to instead get Kenma to exhaust himself.
  • Any mid-rally adjustment where Karasuno stops freestyling and starts reading — that is the franchise’s real power fantasy.

Pros & Cons

Pros: Specific to “Cats vs. Monkeys”; Production I.G craft; team chemistry through-line for Hinata/Kageyama and the gym.

Cons: Requires sequential viewing; practice / scout hours can feel slow if you only want finals energy.

Final Verdict

Kagex overall: 9.4 / 10

  • Story: 9.5
  • Characters: 9.0
  • Animation: 9.4
  • Music: 9.0
  • Enjoyment: 9.5

“Cats vs. Monkeys” keeps Karasuno’s climb honest — no miracle reset, just the next problem on the court. In the second round of the Spring Tournament, Nekoma faces Sarukawa Tech High for the chance to advance to the third round. With Sarukawa an…

What to Expect Next

Next: Season 4 — To the Top Episode 18 (“Trap”). Sequential viewers should continue — Haikyuu!! pays off patience with bracket pressure, not random filler resets.

FAQ

Do I need Season 4 — To the Top Episode 17?

Yes in order. Skipping “Cats vs. Monkeys” leaves gaps Nationals (To the Top) assumes filled.

English title?

“Cats vs. Monkeys” (Fandom / streaming listings).

When did it air?

October 23, 2020 · Production I.G · ~24 min.

Is this filler?

No. Haikyuu!!’s slower hours are practice, travel, or scouting with payoffs — not padded clip shows.

Overall episode number?

77 of 85 TV episodes across four seasons.

Where to watch?

Crunchyroll / Netflix (region-dependent).

Character guides?

Haikyuu!! characters.

Facts & spoilers hub?

Fact and Spoilers.

Keep exploring

Your turn

Did “Cats vs. Monkeys” earn your continue button? Favorite rally, toss, or line?

Which Karasuno voice felt loudest this hour — Hinata, Kageyama, or the bench?

Sources: Haikyuu!! Wiki (Fandom) Episode Guide synopses; © Haruichi Furudate / SHUEISHA / Production I.G.

Production I.G’s Season 4 — To the Top Episode 17 board prioritizes readable faces when rallies stack camera cuts. “Cats vs. Monkeys” (Nationals (To the Top)) assumes you already care why Hinata jumps before he thinks and why Kageyama’s tosses feel like orders — that friction is the series engine, not a mid-season lecture.

Kagex story score 9.5 for this hour only: In the second round of the Spring Tournament, Nekoma faces Sarukawa Tech High for the chance to advance to the third round. With Sarukawa and Nekoma both being masters of defense, it becomes apparent … Compare binge pace vs weekly 2014–2020 drops — the episode was designed as a chapter, not a highlight clip.

Animation 9.4: serve tosses, block touches, and floor digs each get distinct timing. When the episode goes quiet (bench talk, bus rides, coach notes), composition still carries threat — scoreboard digits, jersey numbers, gym humidity.

Characters score 9.0: Karasuno never wins because one ace gets a power-up speech. Wins (and losses) come from who talks, who listens, and who adjusts mid-rally. Daichi’s calm, Suga’s reads, Noya’s chaos, Tanaka’s noise — role clarity is the craft.

Music 9.0 and enjoyment 9.5 track whether “Cats vs. Monkeys” makes you lean forward on a third set. Haikyuu!! is not subtle about wanting you loud with the crowd; the question is whether this hour earns that volume without cheating the scoreboard.

World rules stay volleyball-real: rotation limits, libero swaps, timeout psychology, scout notebooks. Nationals (To the Top) only works if those constraints hurt. This page does not invent manga-only scenes to pad word count — it stays inside Season 4 Episode 17.

Rewatch angle: watch who looks at whom after a free ball. Haikyuu!! hides character turns in eye-lines more than monologues. “Cats vs. Monkeys” rewards that habit without requiring Nationals spoilers.

Who this episode is for: viewers already on the Karasuno track who want a destination review — worth watching, what changes, honest scores — not a wiki dump. If you bounced on sports anime before, note that Production I.G sells emotion through system volleyball, not glowing auras.

Production I.G’s Season 4 — To the Top Episode 17 board prioritizes readable faces when rallies stack camera cuts. “Cats vs. Monkeys” (Nationals (To the Top)) assumes you already care why Hinata jumps before he thinks and why Kageyama’s tosses feel like orders — that friction is the series engine, not a mid-season lecture.

Kagex story score 9.5 for this hour only: In the second round of the Spring Tournament, Nekoma faces Sarukawa Tech High for the chance to advance to the third round. With Sarukawa and Nekoma both being masters of defense, it becomes apparent … Compare binge pace vs weekly 2014–2020 drops — the episode was designed as a chapter, not a highlight clip.

Animation 9.4: serve tosses, block touches, and floor digs each get distinct timing. When the episode goes quiet (bench talk, bus rides, coach notes), composition still carries threat — scoreboard digits, jersey numbers, gym humidity.

Characters score 9.0: Karasuno never wins because one ace gets a power-up speech. Wins (and losses) come from who talks, who listens, and who adjusts mid-rally. Daichi’s calm, Suga’s reads, Noya’s chaos, Tanaka’s noise — role clarity is the craft.

Our reaction

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

9.4/10

“Cats vs. Monkeys” keeps Karasuno’s climb honest — no miracle reset, just the next problem on the court. In the second round of the Spring Tournament, Nekoma faces Sarukawa Tech High for the chance to advance to the third round. With Sarukawa an…

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