Karin is a modern girl. However, she still has no experience... Her friends and her new boyfriend think she has a lot of experience. Not wanting to lose her pride (?), she decides to use a strange older man she met on social media as a sex practice partner. Because he's just an old man, she can bare everything without any shame... She carefully observes his dick, has him loosen her pussy, and even gets to experience a bare cock... She practices for her soon-to-be boyfriend's first time having sex... But she gradually becomes addicted to the man's raw cock...