A contest is made by the Fifth Hokage called Jonin vs Genin. The point is to collect crystals for points, with the higher-ranked Chunin and Jonin holding crystals worth more points. The Genin have blue crystals, while the Chunin and Jonin have red crystals.
The video shows various fights between the Genin and Jonin, which each instance ending in the Jonin unknowingly losing their crystal (or discarding it).
(Source: Wikipedia)+ More
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OVA1: Find the Crimson Four-leaf Clover!
OVA2: The Lost Story
OVA3: Hidden Leaf Village Grand Sports Festival
Movie 1: Ninja Clash in the Land of Snow
Movie 2: Legend of the Stone of Gelel
Special: Tsuini Gekitotsu! Jounin vs. Genin!!
Movie 3: Guardians of the Crescent Moon Kingdom
Shippuden the Movie
Shippuden the Movie 2: -Bonds-
Shippuuden Movie 3: Inheritors of Will of Fire
OVA4: The Cross Roads
OVA5: Naruto, The Genie, and The Three Wishes!!
Shippuuden Movie 4: The Lost Tower
OVA7: Chunin Exam on Fire! and Naruto vs. Konohamaru!
Shippuuden Movie 5: Blood Prison
Shippuuden Movie 6: Road to Ninja
OVA9: Sunny Side Battle
The Last: Naruto the Movie
Boruto: Naruto the Movie
Boruto: The Day Naruto Became the Hokage
Road of Naruto 2022
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Aburame, Shino
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Akamaru
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Akimichi, Chouji
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Akimichi, Chouza
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Ayame
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Baki
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Gaara
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