Black Hanekawa (ブラック羽川, Burakku Hanekawa) is the "alternate identity" of Tsubasa Hanekawa which manifests whenever the oddity called the sawarineko takes over Tsubasa's body. She is the product of Tsubasa's encounter with the oddity, which is known for its ability to possess people. In contrast to Tsubasa's more reserved personality, Black Hanekawa is playful, shameless, and rather sharp-tongued. She and Tsubasa are the narrators of Nekomonogatari (White).