"Kazuki, or full name Kazuki Kiritani, is a central character in the manga series ""Tenjou no Shita ni Koi."" He is a high school student who is a member of the school's kendo team and is known for his exceptional sword skills.

Kazuki is often seen as quiet and reserved, but he has a fierce determination and a strong sense of justice. He is loyal to his friends and will go to great lengths to protect those he cares about. This is shown when he stands up to bullies who are harassing a fellow student and when he takes on a dangerous opponent in a kendo tournament to defend his team's honor.

Despite his strong exterior, Kazuki also has a vulnerable side. He struggles with feelings of inadequacy and often doubts his own abilities. This is particularly true when it comes to his feelings for the girl he has a crush on, Yuna. He is unsure how to express his feelings and often feels that he is not good enough for her.

Throughout the series, Kazuki faces many challenges both on and off the kendo field. He must learn to deal with failure, face his fears, and find the courage to pursue his dreams and his heart. Through it all, he remains steadfast and determined, earning the respect and admiration of his teammates and his peers.

Overall, Kazuki is a complex and compelling character who is able to embody both strength and vulnerability. His struggles and triumphs make him a relatable and inspiring figure, one that readers will root for and remember long after the final pages of the manga."