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 capable 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, and they were being very affectionate with each other. Shocked, he secretly followed them. Unable to believe his eyes as he saw his fiancée holding hands and embracing his friend, he called to check on her, but all he heard were lies... and then...