The excitement of being cuckolded by one's own sister, the excitement of cuckolding a friend's sister in front of one's own sister. The complex emotions of NTR masterpiece episode 4! The brothers who exchange their beloved sisters for sex. Their sisters are being cuckolded by their friends' penises. I cuckold my friend's sister in front of my own sister! "Don't watch, big brother!" Despite her reluctance, seeing her being thrust by someone else's penis and reaching climax, my crotch naturally heats up... Two pairs of siblings entangled in swapping 4P, where the obedient two sisters are toyed with by their brothers' sexual desires and brought to climax.
