Does the Flower Bloom?

Kazuaki Sakurai is a 37-year-old man working at an advertising agency. For a CM shooting, he goes to a beautiful house. At the house, he meets Yoichi Mizukawa while he is painting a picture. Yoichi is a 19-year-old art student. He lives with his cousins in the big old house. Kazuaki becomes attracted to Yoichi.