A female college student (4th year economics major) was walking down the street when suddenly someone approached her, asking, "Could you help us with a bidet toilet seat monitoring test?" Right there on the spot, they began questioning her about her bathroom habits and lower body condition, closely observing details like the position, size, and elasticity of her anus. To simulate the sensation of the bidet toilet seat, they started licking her anally, thoroughly monitoring her reactions. After obsessively licking her anus, they moved on to cunnilingus under the pretense of "checking the bidet function." Licking from her anus up to her pussy, they fully stimulated her most sensitive areas until she was completely aroused. Finally, the staff member, making lewd gestures, passionately fucked her, rapidly driving her into intense ecstasy.