Determined to be completely naked, then, sex is unbanned. Active gravure idol Totsuka Ryuha makes her AV debut in STARS-901.

Despite excelling academically in school, she has very little sexual experience. She is extremely interested in sex and craves more exciting sexual experiences! Therefore, she decides to act in adult films. She appears very nervous when first demonstrating her sexuality in front of others, but once intercourse begins, she displays a voracious and wanton display! She experiences intense penetration and multiple orgasms!