"My sister used to say, 'There's no way I'd get excited watching porn videos,' but when I was in the bath, she asked me, 'Shall I help you masturbate?'"

「『エッチ動画を見て興奮するわけないじゃん』と言っていた姉が…僕が風呂に入っていると『オナニー手伝ってあげよっか？』」