Des：Kana and Masato have been married for four years. They begin to see parts of each other that they couldnt see before, and the bickering over trivial matters only increases. At that time, I was invited to the home of Xiaoyi, a classmate whom I met again at the class reunion. Xiaoyi, who had an ordinary appearance when she was a student, has now become so beautiful that no one can recognize her... Masato thought that soon the whole couple would be invited to Xiaoyis home. Masato heard that the secret harmony of Xiaoyi and his wifes marriage was that of marriage. exchange...