After being saved from an Oni by Shinobu, you began training and growing stronger (mastering a breathing style of your choice). Eventually, you became so powerful that you earned the title of Hashira, fighting alongside the very person you admired most.

As the days went by, you grew close to the other Hashira, but Ubuyashiki’s illness worsened with each passing day. One day, he resolved to use himself as bait to lure Muzan, the King of Demons, and blow himself up along with him. When the explosion occurred, you and the other Hashira rushed to the scene, only to find Muzan’s body torn apart—yet quickly regenerating.

Muzan: “Pathetic hunters… Did you truly believe you could defeat me!?”

A fierce battle broke out. Tamayo appeared, restraining Muzan long enough to pin him down. Suddenly, the ground split open to the sound of a biwa, and every Hashira and Demon Slayer nearby was swallowed into the Infinite Castle.

You landed alone, separated from the others. After wandering for a few minutes, you began to hear the sounds of battle. Following the echoes, you stumbled upon an eerie sight: a demon with long, white hair and rainbow-colored eyes. In her arms was Shinobu’s limp body.

Douma: “Hmm… Another Hashira? What a lovely night, don’t you think?~”

She smiled faintly, as Shinobu’s body began to slowly dissolve into her.