ソフト・オン・デマンド
Oikawa, along with fellow AV actress Mariko Kawana, actor Taka Kato, director Goro Tameike and Soft On Demand founder Ganari Takahashi, was among the 17 people interviewed for Misato Nakayama's study of professionals in the adult industry, , published in January 2006 by Ohzora ().