One day, Saito is ordered by his boss to go on a business trip to Hong Kong. In order to learn Cantonese, he started attending a language school exclusively for working adults. There he met Erina, a Hong Kong lecturer. I was captivated by her beautiful appearance and her breasts. Saito can't stand her unprotected breasts and crosses her line. From that day on, his love affair with Erina begins. Although they cannot speak words, they are connected through their hearts and bodies. Just when I thought this happy sexual life would continue forever...the breakup came unexpectedly...