Synopsis: Aniki to Isshoja Nemurenai

Our parents tied the knot eight years ago, and Haruto became my stepbrother. He's six years my senior, and whilst we aren't biologically related, he treats me as if I'm his flesh and blood. I've developed a troubling desire to become the sole object of his affection, but I'm terrified of him discovering my taboo thoughts. Despite living independently as a university student, somehow, Haruto has discovered my whereabouts...!