"Isn't your kissing technique wrong?" Yumi wonders, frustrated by her boyfriend's lack of passion, so she ends up confiding in his father. Excited by her slightly suggestive confession, the older man forcefully pulls her into a kiss. Overwhelmed by his middle-aged breath and rough, aggressive tongue, Yumi completely succumbs. His kiss feels like a dream, utterly dominating her mind. Ever since that afternoon after school, Yumi has been obsessed with the father's lips, shamelessly seducing him even in front of her boyfriend, as if his presence has carved itself far deeper into her heart than her own boyfriend ever could.