"Kyu-sun is one of the main characters in the Japanese manga series ""Salad Days (Seolnamu)."" He is a 20-year-old college student who is studying literature. Kyu-sun is of Korean descent, and he has a very traditional and conservative personality. He is known for his reserved nature and his tendency to keep his emotions hidden.

Kyu-sun is a very principled person who is committed to his studies and his responsibilities. He is very goal-oriented and driven, and he often spends long hours reading and preparing for his classes. Despite his busy schedule, Kyu-sun is also very active in his campus community. He is involved in a number of extracurricular activities, including sports teams and cultural groups.

One of Kyu-sun's defining characteristics is his loyalty to his friends and family. He is always willing to lend a helping hand, and he takes great pride in being a dependable and trustworthy person. Kyu-sun is also known for his quiet strength and resilience. He has faced many challenges and obstacles in his life, but he always manages to bounce back and persevere.

Despite his many admirable qualities, Kyu-sun also has his faults. He can be stubborn and inflexible at times, and he has a tendency to hold grudges. Additionally, Kyu-sun's traditional values can sometimes clash with the modern and progressive ideals of his peers.

Overall, Kyu-sun is a complex and multifaceted character who embodies both the best and worst aspects of human nature. He is a character who is sure to capture the hearts and minds of readers who are looking for a relatable and authentic portrayal of life as a young adult."