A perverted old man who eavesdrops on the urination sound of Nanami who lives next door and gets excited every day. One day she lost her key and witnessed her in trouble. When she speaks to her, she realizes the limit of her urinary desire by holding her crotch and fidgeting, and her long-standing desire explodes. Take her to the garbage room and stimulate her bladder and pee! The desire to pee escalates further and I'm confined to a diuretic aphrodisiac! Repeat the climax many times with reason jumping incontinence! I can't go back to being a normal girl because I'm drowning until my brain melts with raw copulation.