Sakaguchi has noticed that fellow classmate Azusa Misono has taken a particular interest in him as of late. When, by chance, they meet alone, rational thought is soon reduced to carnal curiosity, and the two share a moment of deep intimacy. However, their encounter is merely just one of many, for all around, others are sharing similar lust-filled moments. From newly formed relationships to rekindled old flames, Soushisouai Note unravels the sexual relationships between different sets of lovers through an exposure of precious moments in their lives in warm, playful, and passionate snapshots.