When I made my annoying sister drink an aphrodisiac, it was so effective that it was so strong that she couldn't stand up → Her legs trembled at 90 degrees perpendicular to her legs! ! I was grinning because my father remarried and had a beautiful sister-in-law, but in reality, he was a disgusting guy who made fun of me and looked down on me because I wasn't popular! At first I put up with it, but every day I was looked down upon and made fun of...