Okamoto brings home a hardworking but gloomy and dowdy woman named Kana from a drinking party. Assuming she's plain-looking all over, just like her face, he expects nothing special about her body. But when he undresses her, he finds a voluptuous figure oozing with pheromones. Learning that she has a slutty, masochistic personality, Okamoto decides to make Kana melt with his dick.
