I Reincarnated as The NTR-ing Scum in an R-18 Doujin, But For Some Reason, The Erotic, Big-Breasted Heroine Keeps Coming on to Me~

Native title: 漫画の寝取り竿役に転生して真面目に生きようとしたのに、なぜかエッチな巨乳ヒロインがぐいぐい攻めてくるんだけど？