★★★☆☆ (3.5/5)

Some viewers refer to this as Season 2, Episode 7 (or episode 14 of the overall season).

On the second evening before the festival, a traveler came to the teahouse: a woman wrapped in a coat of moth-gray, her eyes the color of a storm. She listened to the village gossip until hours thinned, then ordered the bitter tea and asked to sit with Kaito. She called herself Hina and spoke as if she’d seen the world stitched and unstitched a dozen times. When Kaito tried to leave, she slipped a folded scrap of paper across the table. On it were two characters: "Ash" and "Song."

Kaito told of the day the flame-binders left the theater, when they believed the world had forgotten how to listen. They wove their final song and sealed their memories in iron disks so that if the world learned again to listen, the stories could be returned. Kaito’s grandmother had kept one such disk, but she had been tired; she hid the last verse inside a lullaby and buried the rest in a child with a small voice.

Kaito woke before dawn, the village rooflines smudged blue against the coming sun. The Ember Festival was three days away, and with it came the Reckoning: a night when storytellers traded old flames for new truth. Kaito’s voice had always been small, but tonight he carried a secret that would need listening ears.

: While Nezuko dominates the battle, she begins to lose her humanity, nearly attacking innocent humans in her bloodlust. Tanjiro is forced to intervene, desperately trying to calm her down by singing a lullaby their mother used to sing.