Durarara!!

Season 1, Episode 9

Episode Title: Love and Cherish

Air Date: 2010-03-05

Overview:

After losing contact with her brother Seiji, Namie Yagiri enlists Izaya's help to find him. While roaming through Ikebukuro, Seiji and Mika Harima stumble onto Shizuo and Celty and a heated pursuit begins after Celty figures that the head attached to Mika's body is actually hers.