wife's best friend

One day, his wife Mio's best friend Azusa came to stay at his house. Mio and Azusa are happy to be reunited after three years. Her husband, Takashi, can't help but be fascinated by her fresh beauty, which he can't believe is her age. That day, I looked at Azusa and my wife every now and then, and ended up sleeping in a state of agony. Late at night, Takashi, who has become too conscious of his girlfriend, leaves his room for a change of pace. Then, he notices a noise coming from Azusa's bedroom and quietly asks what's going on inside.