Jun always looked forward to meeting his mother-in-law, Ryoko. - Ryoko's plump buttocks, her cleavage trembling as if inviting a man...it was no exaggeration to say that Atsushi had come home to admire it. - Today, he was trying to sneak a peek at Ryoko's body and have some fun, but he ended up witnessing Ryoko on the phone with the person she was having an affair with. - And perhaps because she's lonely because she can't meet that person, Ryoko even starts masturbating without even noticing that Atsushi is peeking in...