Dekakute Ecchi na Ore no Ane (デカくてエッチな俺の姉)

2013-12-20 | T-Rex

Description

After a long absence, Shunsuke returns home at the invitation of his older sisters. He learns that his sisters suffer from a rare condition: they have abnormally strong sexual desires resulting from a disease. Now, Shunsuke must do whatever he can to improve their health. Based on the adult PC game by Marine (brand of Marigold).