MIAB-605 "If It's Just Nipples, It's Not Cheating, Right?" My Girlfriend's Little Sister, Who Was Trying To Cuckold Me, Discovered My Sensitive Nipples After A Bath... She'd Tease Me With Nipple Teases That Made My Brain Melt Anywhere, Anytime, And Until I Changed My Body, And She'd Cum Inside Me... Miyu Aizawa

Aizawa Miyu's younger sister plays the relentless and cruel "stolen sister." After a bath, she discovers his erect nipples in a defenseless state. Starting with the sweet temptation of "it's okay if it's your nipples, right?", she whispers nipple teasing wherever she is, melting his reason into a state of "brain melt." The sense of immorality of betraying his sister increases his sensitivity to the act many times over. Her devilish leading leads him to a blissful hell, draining him until he switches from older sister to younger sister. His dignity as a man is easily trampled on by his younger sister's eyes yearning for a creampie. A passionate stolen story that only family members can experience.