After watching this work starring Ririko Kinosita, the setting of a strict female boss at a lingerie company being humiliated during complaint handling does feel somewhat forced. However, Ririko's mature performance more than makes up for it. Her ample buttocks provide an excellent impact during scenes, and her chemistry with Ozawa is superb. Her expressions while enduring fixed vibrator torment—pretending to resist yet falling into pleasure—are incredibly erotic, and it's clear she suits an M role more than an S. Particularly striking is how her large eyes and pale skin tremble with humiliation, while her slightly sagging breasts and larger nipples enhance the lewdness. The prolonged vibrator insertion is directed to avoid boredom, incorporating modern elements like foot licking and saliva exchange while maintaining a training-themed rather than SM style. With moderate mosaics, it fully showcases Ririko's ripe, natural allure, making it arguably the masterpiece for both actors.