Harumi Asai is a Japanese voice actress affiliated with Difference and previously affiliated with Office CHK. She uses the aliases Rin Nanagase, Kaoru Momozono and Haruka Fukai for adult games and anime. Harumi Asai is a Japanese voice actress affiliated with Difference and previously affiliated with Office CHK. She uses the aliases Rin Nanagase, Kaoru Momozono and Haruka Fukai for adult games and anime.