S01E24: Enter Sango, the Demon Slayer

Sango, a demon slayer, is invited to Hitomi Castle along with her father, the leader of the demon slayers, and her younger brother, Kohaku. But it is a trap. Meanwhile, the undefended village is attacked by a horde of demons and annihilated. Naraku takes the Shikon Jewel shards that they had been gathering and leaves.