[Matsuyama Seiji] Yarashite Kureru Jimi-gao Onee-chan. [Red Eye] [DLSite] [Translators Unite]

A freckled, plain-faced onee-chan in glasses can only stammer as her little brother drops into full dogeza, begging her to make him a man and confessing his love is anything but brotherly. Her panicked protests melt once he's buried deep and bare, her soft body trembling as the first load ever spilled inside her leaves her dripping and aching for more. Sweating through a desperate ride on top, she finally confesses the truth she's hidden since the day he was born.