義妹のおかげで毎日エッチなことができています。親が再婚し一緒に住むことになったひきこもりの義兄は性欲モンスター！毎日果てることなくオナニー。それを見て恐怖を覚える義妹。いつ自分に手を出されないか心配で眠れない…。そして恐れていたことに義妹は下着を漁る…
Thanks To My Little Sister-In-Law, I'm Having Sex Every Day. When Our Parents Got Re-Married, We Started Living Together, And This Big Brother-In-Law Turned Out To Be A Lusty Sex Monster! Every Day, He Enjoys Continuous, Endless Masturbation. When His Little Sister-In-Law Saw That, She Was Filled With Fear. And She Couldn't Sleep At Night, Worried That He Might Eventually Lay His Hands On Her... And Just As She Feared, One Day She Caught Him Hunting For Her Underwear...
