Riko-chan, who has been learning to swim for 12 years, is in love with a woman between the ages of 40 and 60 who is truly a mature woman! - Furthermore, she has a slightly unusual habit of liking the scent of her old man. - Enjoy the excitement of smelling the old man's armpits and behind his ears with a smile on his face. Enjoy the exquisite feeling you can feel just by touching his body that has been trained by swimming.