Aki Sasaki is living happily with the man she loves, and they are about to get married. He loves her very much and is always proud to have such a beautiful, thoughtful, and talented wife. Their intimate life is extremely passionate, allowing him to feel satisfied every day. One day, while on his way home from work, he saw his wife and Nomoto, his close friend, entering Nomoto's apartment, walking together very affectionately. Shocked, he secretly followed them. Unable to believe his eyes when he saw his fiancé holding hands and cuddling with his friend, he immediately called to check on his wife, only to hear a string of lies... and then...