Idiot! We are brother and sister. My brother in law. Legally speaking. Two half-beautiful girls were born when their shitty father remarried. Her older sister Rika is her classmate. Her sister Karen is one year younger. Perhaps because I have lived in a different culture with only women for a long time, being completely naked in my room is commonplace. The girls are curious about my crotch, which suddenly becomes energetic. Three days is the limit for suppressing adolescent sexual desire.