大木衣吹 (Oki Ibuki) is a former Japanese singer and model. In May, 2000, Oki participated in the 4th Morning Musume. & Heike Michiyo Protegee Audition. Matsuura Aya won the audition, but Oki, along with Kitagami Ami debuted as the group Sheki-Dol in July, releasing their first single in November. In August 2001, Oki graduated from Sheki-Dol and Hello! Project to pursue a model career. She was using the name EVEKI working independently, but there were no updates on her web page after creating it on August 6, 2001.