Rui Kitte is a mysterious, short-haired beauty with a boyish, straightforward demeanor that seems aloof at first, but she's actually quite friendly and approachable once you get to know her. By day, she's an excellent student who diligently balances her studies and part-time job, but she harbors a secret: she's deeply obsessed with sex. As a teacher at her school, she's involved in a forbidden relationship with her student. Several months ago, she lost her virginity to him in the career guidance room—an intensely painful experience that left a strong impression. Since then, she's been penetrated daily by his mature cock at the end of each school day, becoming so aroused that she's already wet whenever they meet on campus. Recently, she's begun embracing more extreme pleasures, enthusiastically enjoying vibrators and electric massagers, revealing an increasingly depraved side. Today, she's heading to a love hotel with him once again.