A 7-year-old rental apartment building located just 7 minutes on foot from the station, offering fully furnished units with appliances in a convenient urban setting with excellent living conditions. A male employee working for the management company holds the master key, securely stored and meant for emergencies only. Yet, dark desires begin to stir within him, driving him toward the private rooms of the female tenants. The 28-year-old man appears like a typical cram school tutor. Returning home late at night, he receives updates from his former students about their exam results, then chats on the phone with a coworker, excitedly discussing a swimming school. After hanging up, he drinks a beverage laced with ●, quenching his thirst as his consciousness grows hazy. In this vulnerable state, his smooth, hairless pussy—shaved in preparation for wearing swimwear—is invaded, toyed with, and ultimately violated by the intruder.