Ayato Kirishima (霧嶋 絢都, Kirishima Ayato) is Touka Kirishima’s younger brother and goes by the alias Black Rabbit (黒ラビット, Kuro Rabitto).

He grew up with his sister in the 20th ward but at some point in time, he left the ward. According to Kazuichi Banjou, Ayato subsequently began to wander all the wards of Tokyo, bringing sheer wreckage and chaos upon them, until his unique powers and abilities caught Tatara’s eye. Ayato was therefore pulled into joining Aogiri Tree, where he served as an executive before its downfall.

Later, he joined the new organization Goat under the One-Eyed King.

Ayato was a lean young man, with blue eyes and long, blue messy hair which swept down in front of his eyes. He bore a striking resemblance to his sister and had a rough-looking, rebellious image. He wore a hooded, long-sleeved black leather jacket, and black pants, along with knee-high black boots. Ayato also had a piercing on his left ear, and usually wore a ring on the pinky finger of his right hand.