MUGON-068 I Witnessed My Sister Looking At Her Hidden Erotic Book Without Permission

I entered the room without permission and saw my sister gasping while staring at an erotic book. She is obsessed with erotic books. A faint breath leaked out. A face I've never seen before. If you fall in love with them, they will notice you. Awkward silence. Unfocused gaze. Embarrassed, they run away, but the two are conscious of each other and eventually fall in love with each other.