He fell in love at first sight with his friend's mother, Miyu. She is married. It goes without saying that this love will never come true. But he can't take his eyes off Miyu's beautiful face as she smiles at him gently. He just can't give up on his feelings for Miyu, so he makes up Miyu sorts of excuses to go and check on her...and there he comes across a secret that he shouldn't know about. His pure love for Miyu turns into lust as he sees Miyu lewd appearance, something he never imagined.