In a time of intense racial prejudice, Henry struggles to balance his Chinese heritage with his American identity while developing a deep connection with someone society deems an enemy. The theme explores the internal conflicts faced by young people caught between traditional values and the desire to assimilate into American culture.

Through the forced internment of Keiko's family, the novel illuminates the devastating impact of wartime hysteria and institutional racism. The theme demonstrates how fear and prejudice can tear apart communities and destroy innocent lives, leaving lasting scars on both individuals and society.

The deep bond between Henry and Keiko transcends time, war, and social barriers. Their story illustrates how true connections can survive despite separation, cultural differences, and societal opposition, showing that authentic love has the power to heal and bridge divides.