Demon Slayer: Kimetsu no Yaiba Entertainment District Arc 2×7

Transformation

Nezuko overpowers Daki in their battle but she let blood lust overwhelm her and attacks a bystander. Tanjiro stops her in time. As he struggles to restrain her, Daki prepares to attack them. Uzui gets there in time and beheads Daki only to find something much more fearsome.