Naalukettu vividly portrays the tension between the old and the new. The decaying ancestral home symbolizes the struggle to maintain traditional values in the face of inevitable change. This theme resonates deeply as it reflects the universal challenge of balancing heritage with progress.

The novel delves into the intricate relationships within a joint family. Appunni's journey through familial conflicts, dwindling resources, and clashing personalities offers a rich exploration of human emotions and the complexities of kinship. This theme highlights the importance of understanding and empathy in maintaining family bonds.

Appunni's quest to find his place within a disintegrating family structure mirrors the broader search for identity in a rapidly changing world. His experiences and realizations underscore the significance of self-discovery and the enduring power of memory in shaping one's sense of self.