One Saturday night, Yamada, a subordinate, went out drinking with his boss and ended up going back to his boss's house for more drinks. "I wonder how long I'll be kept up with them tonight?" Yamada wondered anxiously, but inside he was excited. That's because he'd get to meet his boss's wife, Reiko. And tonight, he's even staying over! "Under the same roof as the Reiko I admire, and on top of that, my annoying boss is drunk and fast asleep." Yamada was so excited that his blood boiled, and he pounced on Reiko...