Narrative causality in this franchise operates as a direct domino effect. While many modern anime franchises dilute their continuity with standalone side stories, non-canonical theatrical specials, or alternative universe spin-offs, this production team chose complete adherence to the original texts. Every single theatrical release serves as a direct sequel to the arc preceding it.
The entire overarching mystery is anchored by Puberty Syndrome, an anomalous condition where adolescent anxieties manifest as violations of classical physical laws. In the opening run, Sakuta Azusagawa acts as an empathetic observer and interventionist. He encounters Mai Sakurajima wandering through a public library in a bunny suit, invisible to the world because the surrounding social atmosphere refuses to acknowledge her presence. Solving one character's psychological dilemma does not reset the universe. The emotional fallout and structural consequences persist into the next arc, meaning any attempt to skip ahead renders later character motivations incomprehensible.