Why is tokchae uncomfortable with songsam?

Tokchae feels uncomfortable with Songsam due to their differing social backgrounds and the complexities of their past relationship. Songsam, now a successful figure, represents the societal changes that have occurred since their youth, creating a sense of unease for Tokchae, who struggles with feelings of inadequacy and nostalgia. Additionally, the tension surrounding their shared history and the impact of war further complicates their interactions, making Tokchae hesitant to reconnect fully.