Yuu Mikage is a pseudonym used by Hikaru Ikeda, a Japanese voice actor primarily known for work in adult animated media. Born in Fukuoka, Japan, she was formerly affiliated with the talent agency Keikke Corporation and later worked as a freelance performer. In adult-oriented works, she is also credited under the name Mona.

Mikage is most recognized for her long-standing role as Ren Nanase, the central nurse character in the long-running adult OVA series Night Shift Nurses. She voiced the character in the original 2000 series and its sequel, Yakin Byoutou Ni, as well as in the 2005 spin-off Yakin Byoutou Kranke. Her other notable voice role in the genre is Emiko Amamiya in the 2003 series Taboo Charming Mother. She also voiced the title character in the 2006 special Yagami Yuu, another installment in the Night Shift Nurses franchise. Beyond adult content, her credits include a role in the mainstream anime series BECK: Mongolian Chop Squad in 2004 and as Kouryouha in the 2001 animated adaptation of The Legend of Condor Hero.