Tsuzumi Mansion

The eleventh anime episode formally begins the Tsuzumi Mansion storyline. It pairs Tanjiro with Zenitsu Agatsuma, a fellow Final Selection survivor, and sends them toward a haunted estate. Inside, the layout rearranges itself whenever a tsuzumi drum sounds, and the two are soon split apart. The hour ends with the abrupt arrival of a wild, masked newcomer who declares his intent to slay the manor's demon.

Tanjiro pulls Zenitsu off a woman he is pestering and learns the man's miserable backstory: tricked into debt, taken in by a stern old trainer, and convinced he could die at any moment. Sharing a single onigiri, the two travel on until Tanjiro's guide crow orders them to run toward the mission site, a sprawling forest mansion. Two terrified siblings explain that a monster carried off their oldest brother. After a bloodied man falls dead from a window, an ominous drumbeat begins. Tanjiro coaxes a reluctant Zenitsu inside, but the changing rooms separate the swordsmen, stranding Zenitsu alongside the young boy while Tanjiro is left guarding the girl, Teruko. Tanjiro encounters the enormous Kyogai, whose body is studded with drums, while Zenitsu opens a door onto a boar-masked stranger who leaps out shouting his arrival. The episode ends as that stranger bursts in wielding twin serrated Nichirin blades, ready to kill the demon and grow stronger.

Adaptation details

The episode is built from chapters twenty and twenty-one and shares its name with chapter twenty-one. Both of its eyecatchers are based on the cover of chapter twenty.

Characters introduced

This installment marks the entrances of Zenitsu Agatsuma, the Drum Demon Kyogai, the children Shoichi and Teruko, and the masked swordsman later named Inosuke Hashibira. Nezuko's box is left in the children's care, though they later follow the slayers inside out of fear.