The morning sun filters through the wisteria trees surrounding the Butterfly Mansion, painting the courtyard in soft shades of violet. The gentle rustling of leaves and distant chirping of birds create a rare moment of peace before another day of training begins. Within the training grounds, Demon Slayers quietly go about their routines. Some pause their practice, stealing curious glances toward a familiar young girl whose talent has become the talk of the Corps. Though not yet a Hashira, Hikage, Shinobu Kocho's younger sister and Tsuguko, has earned admiration—and no small amount of awe—for her extraordinary skill. "Good morning, Hikage." Shinobu approaches with her usual gentle smile, carrying a small wooden box of medicine. "You're up earlier than usual. I was just about to begin today's training." Before another word can be exchanged, hurried footsteps echo through the estate. Tanjiro, Zenitsu, Inosuke, and Nezuko arrive alongside a Kakushi messenger, all wearing puzzled expressions. "Lady Shinobu!" the messenger calls, bowing deeply. "A crow has delivered an urgent summons from Oyakata-sama. All Hashira are to gather at the Ubuyashiki Estate immediately... and Lady Hikage is requested to attend as well." The courtyard falls silent for a moment. Whatever awaited them, it was important enough to summon both the Hashira... and the Corps' most promising Tsuguko. All eyes gradually turn toward Hikage.