What's "School"?

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Yaiba Chapter 3

Yaiba Chapter 3 Cover.jpg

Title: What's "School"?
Japanese title: ガッコってなんだ
(Gakkotte Nanda)
Original release: September 7th, 1988
Shōnen Sunday issue: #41/1988
Volume: 1
Pages: 20
Anime adaption: Episode 1: Heisei’s Samurai Yaiba Appears
Prev chapter: « You'll Be Taking Care of Me
Next chapter: Lots of Samurai »
List of chapters

What's "School"? (ガッコってなんだ Gakkotte Nanda?) is the third chapter of the manga of Yaiba. It was written by Gosho Aoyama and drawn by him and his assistants and first released in Shōnen Sunday #41/1988 on September 7th, 1988 and later on reprinted as the third chapter of volume 1 on April 18th, 1989. It shows Yaiba Kurogane's first day at school, where he almost instantly gets into trouble again.



In order of introduction:


In order of appearance:



In order of introduction:


In order of introduction:


A brand new day at the Mine residence and Kenjuro Kurogane is already leaving again after just moving in yesterday, making Raizo and Sayaka Mine celebrate that the two troublemakers are gone. But just like he announced the day before, he left his son with the Mine family. Yaiba Kurogane follows Sayaka to school, wanting to know what it is. While her classmates are fascinated by the spikey-haired young boy, flooding him with questions, he quickly finds himself in his second battle since his arrival in Japan - against the choleric classroom teacher of Sayaka, Mr. Sudo, a fifth Dan in Kendo...


  • Sayaka Mine and her classmates wear summer school uniforms (June 1st-September 30th)
  • Third chapter of what the fandom calls the "Yaiba Arc" (Manga: Chapters 1-5, Anime: Episode 1)


  • You'll Be Taking Care of Me (Yaiba Manga: 2) : This chapter is a direct continuation of the second one, set on the morning of the day right after the one in chapter 1 and 2. Yaiba Kurogane also tries to sense Mr. Sudo the same way he learned to sense animals in the jungle and like he did with Mutou in the second chapter.

Referenced in

  • Lots of Samurai (Yaiba Manga: 4) : The next chapter is a direct continuation of this one and is set on the same school day, after lessons are done.
  • A Samurai's Pride (Yaiba Manga: 253): Yaiba turns around and tries to sense Takeshi Onimaru's presence at the end of the chapter like he did with Mutou in the previous and Mr. Sudo in this one. While the audience laughs, Sayaka Mine is the only one who notices what he's doing.


Keiko Momoi in chapter 3.

Magic Kaito


  • Besides Keiko Momoi, there sometimes is a girl in the background of the class room looking similar to Aoko Nakamori. It's never confirmed whether it's supposed to be a younger version of her too or if it's just a case of similiar looking character designs, though.


See also


Main Characters Yaiba KuroganeSayaka MineMusashi MiyamotoTakeshi OnimaruKojiro SasakiJubei YagyuShonosukeKagetoraGerozaimon GerodaNamako-Otoko
Secondary Characters Kenjuro KuroganeRaizo MineShizuka MineGrandma MineMoroha KuroganeMichiko KuroganeSoshi OkitaKumo-OtokoList of minor Yaiba characters
Manga Yaiba Manga Volume 1-1011-2021-24Volume 123456789101112131415161718192021222324
OVA adaptations Conan vs. Kid vs. Yaiba - The Grand Battle for the Treasure Sword!!
Kenyuu Densetsu Yaiba List of episodes
Games Kenyuu Densetsu Yaiba (Super Famicom)Kenyuu Densetsu Yaiba (Game Boy)Kenyuu Densetsu Yaiba (Sega Game Gear)List of games
Crossovers The Kendo Tournament of Love and MysteryThe Scarlet School TripList of crossovers
Related Articles Swords used in YaibaYaoyaEkoda High SchoolPlay It AgainK∀ITO