"Kouki Nanjo is one of the main characters in the manga series ""Reversed Love Route."" He is a popular senior student in high school, who is known for his good looks and charming personality. Kouki is kind-hearted, loyal, and caring, which makes him very popular among his peers.

Kouki Nanjo is the captain of the school's basketball team and is very passionate about the sport. He is a talented player who has won several awards, and his dedication to his team inspires his teammates to do their best.

Kouki has a close relationship with his family, especially his younger sister, who he is very protective of. He is also very close with his childhood friend, Yuto, who he has known since elementary school. Kouki cares deeply about his friends and is always there to support them when they need him.

Despite his popularity, Kouki is not interested in romantic relationships, and he has turned down several confessions from girls in the past. This has earned him the nickname ""the heartbreaker,"" although he is not intentionally trying to hurt anyone's feelings. Kouki has a strong sense of responsibility and wants to focus on his studies and his basketball career.

In ""Reversed Love Route,"" Kouki's life takes an unexpected turn when he meets the protagonist, a transfer student named Ayumi. Although they start off on the wrong foot, Kouki is intrigued by Ayumi's determination and strong-willed personality. Over time, Kouki and Ayumi develop a close friendship, and Kouki starts to realize his feelings for her are growing beyond friendship.

Kouki's character arc in ""Reversed Love Route"" is about learning to let go of his fears and embracing his true feelings. He starts to understand that love is not a weakness but a strength, and he becomes more confident in expressing his emotions. Kouki's relationship with Ayumi becomes the catalyst for his personal growth, and he becomes a more mature and empathetic person by the end of the series.

Overall, Kouki Nanjo is a well-loved character in ""Reversed Love Route"" for his kindness, loyalty, and dedication to his friends and family. His journey towards self-discovery and learning the true meaning of love is one of the highlights of the series."