The fourth and final season of Broad City saw the characters navigating more mature themes, including long-term relationships, career milestones, and the contemplation of future goals. This season was notable for its reflective tone, as Ilana and Abbi looked back on their experiences and the lessons learned throughout their twenties. The humor remained a central element, but it was often tinged with a sense of nostalgia and melancholy, acknowledging the passage of time and the evolution of their lives. The final season provided closure for the characters and the audience, emphasizing the importance of friendship and self-discovery.