Who did Bruno miss the most in boy in the striped pajamas?

In "The Boy in the Striped Pajamas," Bruno misses his best friend, Schmuel, the most. Despite the stark differences in their circumstances, their friendship provides Bruno with a sense of connection and understanding. The bond they share highlights the innocence of childhood and the tragic impact of the adult world's divisions. Bruno's longing for his friend underscores the themes of friendship and the devastating consequences of prejudice.