Unable to bear seeing her younger brother unable to masturbate due to injuries to both hands, Nanami helps him stroke his cock. Since then, secret masturbation support has become a daily routine. It doesn't end with just handjobs; they move on to blowjobs and thigh jobs... Eventually, reaching the brink of insertion, the two establish a rule: "If you only insert up to 3cm of the tip, it doesn't count as having sex." They begin to repeatedly engage in incomplete glans sex. Is 3cm insertion barely safe? The siblings are so erotic, accidentally inserting deeper even though they know they shouldn't! The guilt and pleasure when fucking deep into the vagina are truly exceptional!!
Alice JAPAN
