Fuu Watarai (渡来 ふう, Watarai Fū; born September 11, 2003 in Tokyo) is a former Japanese adult video (AV) actress. She made her debut in the industry on June 17, 2025, and was represented throughout her career by the agency Mine’S. In June 2026, she announced through her official social media accounts that she would retire from the AV industry, setting her final day of activity for July 18, 2026. During her career, she stood 161 cm tall and had body measurements of 86-58-88 cm, with a G-cup bust. Outside of her professional work, she enjoys traveling and visiting cafés.