An incredible woman moves in next door to dull, middle-aged Atsushi! Her name is Asahi, and she's always without a bra. Atsushi can't help but be curious about this sexy woman, so he happens to spot her on his way home and admires her panties, but is immediately found out. Then she invites him into her house, saying, "I'll keep quiet, so can you help me out a bit?"