a former young wife gal who was living in Tokyo returns to the countryside after a divorce, and has creampie sex many times with the brother she met there who is not blood-related. sarina, who has a manly older sister-like personality, has super beautiful breasts that are revealed when she takes off her clothes. the brother, who was a recluse virgin, can't stop being excited, and creampies many times with devouring kisses and intense piston action.