The older brother can't stop getting an erection when he sees a glimpse of his sister's panties under her skirt while she is in a defenseless state! He secretly gives her an aphrodisiac and makes her sweat! Her knee-high socks become steamy... The brother's penis is stimulated by the steamy knee-high socks and the warmth of his sister's feet, and he is on the verge of climax! Perhaps due to the effect of the aphrodisiac, the younger sister is also extremely sensitive, and when he is thrusted hard, she trembles at the knees and collapses in a climax! The absolute territory of the black knee-high socks and pure white panties that tightly grip her beautiful legs and thighs is justice!