Ninja Hattori-kun Episode 689

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👀 SPOILER-FREE SUMMARY

With only five episodes remaining in the entire 694-episode run of Ninja Hattori-kun, this installment delivers a classic formula fans know well: Kenichi's academic struggles meet Hattori's ninja ingenuity. The episode title hints at Kenichi somehow achieving a perfect score through Hattori's "ninja copy of sheet technique," promising the trademark comedic chaos that comes whenever ninja skills collide with everyday school life. Expect the lighthearted, slapstick energy that defines the series — Kenichi's desperation, Hattori's well-meaning but mischievous assistance, and the inevitable comedic fallout. As a late-series entry airing in December 1983, the tone stays consistent with the show's established rhythm: breezy, playful, and built around short comedic scenarios rather than heavy drama. A comfort-food episode for longtime viewers riding out the series finale stretch.

🔥 KEY MOMENTS

⚠️ Spoiler Alert!
1

Kenichi's Perfect Score

Kenichi scores a flawless 100 on his math test and proudly shows it off — a rare academic triumph that sets the entire episode's conflict in motion.

2

Kemumaki's Goat Scheme

Driven by pure jealousy, Kemumaki hatches one of his pettiest plans yet: luring a goat to devour Kenichi's test paper so no evidence of the perfect score remains.

3

Paper Destroyed, Dreams Crushed

The goat munches through Kenichi's test paper, leaving him in complete distress with no way to prove his achievement to anyone.

4

Hattori's Ninja Restoration

Hattori steps in with his ninja skills to meticulously recreate the test paper from scratch, demonstrating that ninjutsu can solve even the most absurd problems.

5

Perfect Score Preserved

Kenichi submits the replicated test paper and his 100 stands. Kemumaki's scheme backfires completely, and friendship and ninja ingenuity win the day.

📍 ARC CONTEXT

Episode 689 sits just five episodes from the series finale, placing it deep in the closing stretch of Ninja Hattori-kun's remarkable 694-episode run. As a standalone comedic episode rather than part of a serialized arc, it maintains the episodic structure the show relied on throughout its run, offering familiar character dynamics without building toward a dramatic conclusion. Fans approaching the end of this long-running classic can treat these final episodes as last opportunities to enjoy Hattori and Kenichi's signature comedic partnership.

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©藤子スタジオ／シンエイ

AnimeOshi.com refers to anime titles, character names, logos, and other trademarked or copyrighted materials to identify and describe the works being reviewed, discussed, ranked or otherwise referenced on this site. This usage is believed to be nominative fair use or non-infringing and is not intended to imply any affiliation with the respective rights holders.

All trademarks and copyrights remain the property of their owners. If you are a rights holder and have concerns about any content on this site, please contact us at legal@animeoshi.com