Bitch na In`ane-sama

Riko is a dedicated professional who has built a successful career within her company. Her younger brother, Takashi, recently left their family home to attend college and now lives independently in his own apartment. Despite their separate lives, Riko remains attentive to her brother's well-being and decides to visit his residence one day while he is away. Intending simply to tidy up his living space, she begins cleaning his room but unexpectedly stumbles upon an adult DVD focused on anal content hidden among his belongings. Overcome by sudden curiosity, Riko finds herself unable to resist the urge to watch the video. As the explicit scenes play out before her, she becomes deeply aroused and begins to pleasure herself, completely losing track of her surroundings and the passage of time. Her private moment of indulgence takes a dramatic turn when Takashi unexpectedly returns to his apartment. Walking into his own room, he discovers his sister in the midst of her compromising act, leaving them both caught in a shocking and deeply awkward situation that neither could have anticipated.