After giving a popular yuri novel one star and calling it "trash," I was promptly murdered by a mysterious woman. When I awoke, I had been reincarnated into the novel. The Problem Is! I'm neither the Protagonist nor the Villain! Now I am the older brother of one of the yuri heroines herself. And if I don't change the storyline, my sister will still fall into the same yuri route as in the original novel.