Azusa works as a sales support staff at a cosmetics company. One day, overwhelmed by work-related stress, she stumbled upon a post on a dating site and, driven by her affectionate and older-man-loving personality, ended up applying on her own. Recently, she's been in a casual sexual relationship with an older man she met through the site. But is he really her boyfriend, or just someone she casually sleeps with? Her relationship with him remains ambiguous.