「やばい！妹に中出し！？」性の知識が希薄な妹は僕の事を男として見ていないのか、家の中ではいつも無防備な姿でウロウロ…。今まで気にした事もなかった僕だったがいつの間にか成熟した身体になった妹をまじまじと見て興奮してしまい… 4 - 綾瀬ことり

Maybe my sister doesn't have much sexual knowledge, she's almost half-naked in the house. I had never been concerned about it until now, but when I was looking at my sister's body seriously, I noticed that it was a woman's body, and my excitement did not subside! Involuntarily attack and Muriyari SEX! !! At the end of the phrase, he was a devil brother who would vaginal cum shot ...