The divorced man next door is always so kind, helping out with chores like cleaning the entrance and carrying luggage. One day, when Mikuru's husband was away on a business trip and she fell ill, he took care of her, bringing her meals and being attentive. Touched by his kindness, Mikuru, taking advantage of her husband's long absence, decides to seduce the innocent neighbor as a thank you for his help. Mikuru's maternal instincts are tickled by the neighbor's naivety, so she decides to tease him further by seducing him in a revealing costume, ultimately enjoying a passionate affair with him.