炎の中忍試験! ナルトvs木ノ葉丸!!

"Chunin Exam on Fire! Naruto vs. Konohamaru!!" is the ninth OVA in the "Naruto Shippuden" series, released in Japan on July 30, 2011, alongside the theatrical film "Naruto the Movie: Blood Prison." This short film tells the story of the Chunin Exams held in preparation for the Fourth Shinobi World War. Konohamaru faces his idol, Naruto, in a battle where Konohamaru shows significant growth, using techniques like the "Big Ball Rasengan" that Naruto never taught him. Ultimately, Konohamaru wins by default when Naruto uses a forbidden technique, leading to his promotion to Chunin. This short OVA is a popular installment in the "Naruto" franchise, known for its passionate battles and the bond between master and student.