The man I've called my master in the past

Three years have passed since she was married...Rino has been spending her days fulfilling with her beloved husband. However, one day he starts to receive silent calls at his home. As she was feeling anxious about not knowing who the other person was, she heard a voice from the phone...the moment she heard it, Rino's body froze. There's no way he'll forget him, there's no way he'll forget him... This voice was a man who had given everything up until three years before he married his husband and was captivated by pleasure. And before the past revived and her body heats up, the man appears...