In a world where endings precede beginnings, a journey unfolds up the Thirteenth Staircase in September for a group including Kino-Raichi, Noise, Emoto Sonoki, Mio-tsukushi Takami, and Mio-tsukushi Misora. As they ascend, what absurd and familiar revelations await at the summit in the sixth chapter of the 'Zaregoto' saga, narrated by a truth-seeking soul who values silence above all else?