In the lesbian training release "nao." starring Shoko Mikami, the highlight is nao.'s relentless tongue torture. The new device "Boneless Vibrator 2005" is mercilessly inserted, causing her to writhe in agony, screaming "It's hot! It's hot!" from its overwhelming size. Overcome by intense pleasure, she even volunteers to pee, with scenes capturing her urination, and moments where she confesses this sensation is something she's never experienced before. Though defiant at first during the BDSM training, shouting "It hurts!", Shoko eventually breaks down under the pressure, crying, "Why am I being put through this?" as tears stream down her face.