Yui Hatano and Yui Kato make their first joint appearance together as "Double Yui," fulfilling their first lesbian experience. As her pale, translucent skin is caressed, Yui Kato shivers with sensation, overwhelmed with pleasure as the admired Yui Hatano stimulates her nipples and clitoris from behind, sending her into a blissful, relaxed state. Burying her face into Hatano's full breasts, Kato cries out in joy from this first-time ecstasy. Hatano licks the love juice from Kato's freshly removed panties, and though shy, Kato is consumed by pleasure. Melting into deep tongue kisses, Kato drifts into euphoria, her entire body hypersensitive, her nipples twitching with every touch. Completely entranced by Hatano's lead, she surrenders helplessly, exposing her entire self. Her anus and pussy are carefully examined and licked, making her moan in ahegao expression, "This is my first time ever..." Her breathing changes as she repeatedly orgasms. Her mind and body overtaken by pleasure, she wets herself with a vibrator, then gets mercilessly tormented by an electric massager, climaxing with powerful squirting. In turn, Kato passionately returns the pleasure to Hatano. The woman who was just moments ago the "older sister" now writhes like a younger sister during 69, receiving cunnilingus. Kato eagerly laps up Hatano's pissing pussy, swallowing every drop, returning the affection. They pull off each other's panties, rub their bare pussies together, clamp the electric massager between them, and climax violently at the same time. Drenched in Hatano's squirt, Kato bursts into tears of overwhelming bliss!!