My sister comes into bed without her permission, Kawakami Nanami

The whole story is subjective. An incest story between me and my sister! That day, to encourage my sister crying, I hugged her and she kissed me...and since then, it seems like I've been replaced by my sister's boyfriend. This kind of relationship is no good after all! Even though I think so, my lower body reacts hard. My sister crept into her futon again today. Lately, I've been getting into my room and the bath, and it's about time my self-control will fall apart... Even the older sister, who has been provoking her so much, transforms into a masochistic woman who begs for more if she fucks her dick!