The protagonist's journey in Solo Leveling resonates with the audience due to its theme of growth, perseverance, and overcoming challenges. Jinwoo's transformation from a weak Hunter to a powerful S-Rank Hunter captivates readers as they witness his struggles, setbacks, and ultimate triumphs. This relatable journey of self-improvement and determination resonates with the audience, inspiring them to also strive for personal growth and success in their own lives.