In an upscale park in Akasaka, a date unfolds with a refined young lady from a wealthy Yamanote upbringing. Her charm lies in her translucent white skin and soft, voluptuous figure. Having recently broken up with her boyfriend and grown weary of drowning in daily masturbation, she applied for this job. Lately, her fantasies have shifted toward her younger brother—someone close in age, with whom she's begun developing a curious interest. When forced to flash her panties in the park, her velvet underwear, redder than autumn leaves, is already soaked. She maintains the demeanor of a proper "young lady," hiding her lewd thoughts and wet lingerie beneath a thick coat as she walks through town. Experience the full depth of Yamanote's hidden eroticism as she stays constantly aroused throughout the encounter.