Scientific expertise becomes the decisive tool for survival and progress. Senku uses his knowledge to produce gunpowder and other essential materials, demonstrating the practical application of science in a post-apocalyptic world.

The discovery of other survivors through smoke signals shows the fundamental importance of human connections. The courage to make contact despite the risks underscores the value of community in rebuilding civilization.

The escalating conflict with Tsukasa raises profound moral questions. It's not just about mere survival, but also about the ethical principles by which the new world should be built.