Yoshii Kazuya is the main character in the light novel series "Baka to Test to Shoukanjuu," written by Kenjirou Hata. He is a high school student at Fumizuki Academy, known for his poor academic performance and carefree attitude. Despite his shortcomings, Kazuya is loyal to his friends and often finds himself in humorous situations. The story revolves around a unique educational system where students summon avatars to battle each other based on their test scores. Kazuya's adventures often involve his classmates, including Akiyama Yoshii and Minami Shimada, as they navigate challenges and competitions within the school.