Hinako Matsui sought to appear in this video in pursuit of ultimate sex. Until now, she has only ever experienced orgasm through masturbation, and she strongly desires to feel the intense pleasure of passionate sex that makes her mind go completely blank. Born into a wealthy family, she was raised under extremely strict parental discipline, which made it difficult for her to enjoy free time compared to other children her age. As a result, she has had little experience with relationships or romance and remains nearly inexperienced to this day. While she originally wanted to date more men and gain various experiences before marriage, she ended up marrying early due to her parents' urging. However, her curiosity about sex became impossible to suppress, and deciding that doing this just once would be acceptable, she resolved to take part.