Every Naruto fan knows Team 10: Ino Yamanaka, Shikamaru Nara, and Choji Akimichi, whose clans have fought together for generations under the battle formation name Ino-Shika-Cho (ηͺιΉΏθΆ).
What most fans outside Japan never learn is that the name isn't ninja jargon at all. It's a winning hand in a card game β and Japanese readers get the joke instantly.
This has nothing to do with the plot. It's pure trivia. It's also delightful.
First, the names are animals
Split the formation name apart and you get three animals:
- Ino (ηͺ) β wild boar
- Shika (ιΉΏ) β deer
- Cho (θΆ) β butterfly
Each teammate carries one in their given name: Ino, Shikamaru, Choji. So "Ino-Shika-Cho" is simply "Boar-Deer-Butterfly." But why would three ninja clans name their legendary formation after a petting zoo?
The answer: hanafuda
Hanafuda (θ±ζ, "flower cards") is Japan's traditional card deck β 48 cards organized into twelve suits, one for each month of the year, each represented by a flower or plant. The most popular hanafuda game is koi-koi, where you score by collecting named card combinations called yaku, a bit like poker hands.
And one of the most famous yaku in koi-koi is called β you guessed it β Ino-Shika-Cho. It's the set of three specific animal cards:
- The boar, which appears on the bush clover card (July)
- The deer, on the maple card (October)
- The butterfly, on the peony card (June)
Collect all three and you score. It's a classic, satisfying hand β roughly the koi-koi equivalent of a full house. So when Japanese readers meet a trio named Ino, Shikamaru and Choji, the pun lands immediately: these three are a matched set. Individually fine, together a winning hand.
That's the entire thesis of Team 10 encoded in a card game.
Kishimoto committed to the bit
The reference isn't a one-off gag β it's baked into the clans themselves:
- The Nara clan are deer herders, tending a forest of them (and if the clan name sounds familiar: the real city of Nara is world-famous for its sacred, bowing deer).
- Choji's ultimate technique sprouts giant chakra butterfly wings β "Butterfly Mode" β turning the gentlest member of the team into its heaviest hitter.
- The Yamanaka family runs a flower shop, which is a lovely touch under a flower-card pun, and boar-headed stubbornness suits Ino's personality just fine.
And the trio is generational: Ino, Shikamaru and Choji are canonically the sixteenth generation of Ino-Shika-Cho. Their fathers β Inoichi, Shikaku and Choza β fought as the previous one, and in Boruto their children (Inojin, Shikadai and Chocho) carry it into the seventeenth. A winning hand, dealt again and again.
Bonus trivia: the Nintendo connection
One more layer for the road: the most famous maker of hanafuda cards is a little Kyoto company founded in 1889 to manufacture them. Its name? Nintendo. The company sold flower cards for decades before it ever touched a video game β and it still sells hanafuda today, including, at various points, Mario-themed decks.
So the chain of history runs: a 19th-century card company β a card game hand β the names of three beloved ninja. Culture is weird and wonderful like that.
Why little details like this matter
None of this changes a single fight or plot twist. But it's a great example of how much texture hides in Naruto's naming β the same instinct that filled the series with Buddhist vocabulary. For Japanese readers, "Ino-Shika-Cho" carries an instant, warm familiarity: the comfort of a hand of cards played at New Year's with family. Now it can carry that for you, too.
Want to revisit Team 10's best moments? See Naruto and Naruto: Shippuden, or check where they sit on our all-time rankings.
Sources: Formation InoβShikaβChΕ β Narutopedia, Ino-Shika-ChΕ β Fuda Wiki (hanafuda), Hanafuda in popular culture β Fuda Wiki, The symbolism behind Ino-Shika-Cho β Game Rant